Honkai: Star Rail Walkthrough & Guides Wiki

Honkai: Star Rail

A Mysterious Key Location and How to Use

♦ Latest Updates: Version 2.6 Info & 2.7 Release Date and Banners
♦ 5★: Rappa, Imbibitor Lunae, Acheron, Aventurine
♦ 4★: Yukong, Lynx, Xueyi, Sampo, Pela, March 7th
♦ 2.7 Characters: Sunday, Jing Yuan, Fugue, & Firefly
♦ New Events: Unknowable Domain, Sound Hunt Ninjutsu Inscription & Shadow of the Ranger

Honkai Star Rail - How to Get A Mysterious Key

A Mysterious Key is a mission item in Honkai: Star Rail. Check out our guide on its location and how to use it!

List of Contents

How to Get the A Mysterious Key

Obtained From an Event Mission

Honkai Star Rail - Where Are You Mystery Trotter Event Guide

A Mysterious Key can be obtained by progressing through the Anomaly Detection 5 mission from the Where Are You, Mystery Trotter? Event.

Where Are You, Mystery Trotter? Event Guide

How to Use the A Mysterious Key

Used to Progress the Where Are You, Mystery Trotter? Event

Honkai Star Rail - A Mysterious Key Usage

A Mysterious Key is used to progress the Where Are You, Mystery Trotter? Event by opening a double-doored wardrobe!

Where Are You, Mystery Trotter? Event Guide

A Mysterious Key Information

A Mysterious Key
A Mysterious Key Item
Description A slightly rusty key with no clear indication of which lock it corresponds to. Try it on all the locks you can until you find the right one!

Honkai: Star Rail Related Guides

Honkai Star Rail - Items

All Item Types

Item Type
Upgrade Materials Valuable Items Consumables
Mission Items Synthesis Materials

All Items List

All Mission Items

Mission Items
Real Treasure Map ItemReal Treasure Map Ace GamblerAce Gambler's Precious Part Astral Express Miniature (Limited Edition) ItemAstral Express Miniature (Limited Edition)
FireflyFirefly's Budget Legend of the Trailblazer ItemLegend of the Trailblazer Symbol of Fortune ItemSymbol of Fortune
80% New Thermal Mining Pickaxe Item80% New Thermal Mining Pickaxe A Bottle of Draconic Tears ItemA Bottle of Draconic Tears A Bottle of Glass Marbles ItemA Bottle of Glass Marbles
A Bouquet of Ball Peonies ItemA Bouquet of Ball Peonies A Bunch of Rainbows ItemA Bunch of Rainbows A Departing Voyager ItemA Departing Voyager
A Medicine Concocted by Dan Shu ItemA Medicine Concocted by Dan Shu A Mysterious Key ItemA Mysterious Key A Note Between Book Pages ItemA Note Between Book Pages
Access Authentication ItemAccess Authentication Access Code for the "Chest" ItemAccess Code for the "Chest" Ace GamblerAce Gambler's Discarded Part
An Archery Set Gifted For Someone Unknown ItemAn Archery Set Gifted For Someone Unknown Ancient Coin ItemAncient Coin Angry Gear ItemAngry Gear
Anonymous Package ItemAnonymous Package Anti-Dust Mask ItemAnti-Dust Mask ArlanArlan's ID Pass
Artisanship Commission Jade Seal ItemArtisanship Commission Jade Seal Artisanship Commission Standard Parts Set ItemArtisanship Commission Standard Parts Set Auspicious XV ItemAuspicious XV
AventurineAventurine's Token Average Trash ItemAverage Trash Backup Batteries ItemBackup Batteries
Ball Peony ItemBall Peony Big Sword ItemBig Sword Bitter Dreams ItemBitter Dreams
Blue Signal Log ItemBlue Signal Log Box of Metal Plates and Bandages ItemBox of Metal Plates and Bandages Box of Rubbing Alcohol ItemBox of Rubbing Alcohol
Box of Special Painkillers ItemBox of Special Painkillers Broken Ceiling Tile ItemBroken Ceiling Tile Brumedew Concentrate Pellet ItemBrumedew Concentrate Pellet
CaiyiCaiyi's Exchange Diary Calm Gear ItemCalm Gear ChengjieChengjie's Paper Boat
ChildrenChildren's Book Package Chili Oil Beef Offal Stew ItemChili Oil Beef Offal Stew Clothes for "That Teacher" ItemClothes for "That Teacher"
Cloudbreadth Sleeves Limited Vertical Collar Jacket ItemCloudbreadth Sleeves Limited Vertical Collar Jacket Clue: “Phrase” ItemClue: “Phrase” Clue: Booklet ItemClue: Booklet
Clue: Dimension-Phasing Flame ItemClue: Dimension-Phasing Flame Clue: Missing Researcher List ItemClue: Missing Researcher List Cognition Chasm: Confidence Crisis ItemCognition Chasm: Confidence Crisis
Cognition Chasm: Energy Lifeform ItemCognition Chasm: Energy Lifeform Cognition Chasm: Genius Society Member ItemCognition Chasm: Genius Society Member Cognition Chasm: ResearchersCognition Chasm: Researchers' Disappearance
Cognition Chasm: Spontaneous Human Combustion ItemCognition Chasm: Spontaneous Human Combustion Cognition Chasm: The Xianzhou Alliance ItemCognition Chasm: The Xianzhou Alliance Commodity Contract ItemCommodity Contract
Common Trash ItemCommon Trash Compendium of Remedies ItemCompendium of Remedies Core Module ItemCore Module
Corporate Access Authentication ItemCorporate Access Authentication Courtyard Gate Key ItemCourtyard Gate Key Customized Pink Safety Helmet ItemCustomized Pink Safety Helmet
Cycrane Surveillance Images ItemCycrane Surveillance Images Damaged Music Box ItemDamaged Music Box Dark Fist Tournament Invitation Letter ItemDark Fist Tournament Invitation Letter
Dazzling Golden Watch ItemDazzling Golden Watch Dazzling Rainbowite ItemDazzling Rainbowite Delicate Snow Globe ItemDelicate Snow Globe
Delivery Package ItemDelivery Package Denisovan Slumbernana Pendant ItemDenisovan Slumbernana Pendant Device Encryption Key ItemDevice Encryption Key
Dirty Mechanical Part ItemDirty Mechanical Part Dirty Ribbon Tied to a Bell ItemDirty Ribbon Tied to a Bell Discarded Letter Sheets ItemDiscarded Letter Sheets
Disciples of Sanctus Medicus Letter ItemDisciples of Sanctus Medicus Letter Dismantled Art Pieces ItemDismantled Art Pieces Divine Arrow Embers ItemDivine Arrow Embers
Drifting Clouds ItemDrifting Clouds Drowning Sweetness ItemDrowning Sweetness Dud Grenade ItemDud Grenade
Eerie Building Block ItemEerie Building Block Eerie Twig ItemEerie Twig Elixir of Dragon Oil ItemElixir of Dragon Oil
Emotion Protoype: Broken Dreams ItemEmotion Protoype: Broken Dreams Emotion Protoype: Everlasting Hatred ItemEmotion Protoype: Everlasting Hatred Emotion Protoype: Momentary Freedom ItemEmotion Protoype: Momentary Freedom
Emotion Protoype: The Cloud of Doubt ItemEmotion Protoype: The Cloud of Doubt Emotion Protoype: The Moment of Betrayal ItemEmotion Protoype: The Moment of Betrayal Envision a Rose Forthcoming ItemEnvision a Rose Forthcoming
Family Photo ItemFamily Photo Fan With Plain Carp Print ItemFan With Plain Carp Print FateFate's Epistle
First Snow ItemFirst Snow Flower Made From Scrap Iron ItemFlower Made From Scrap Iron Folded Photo ItemFolded Photo
Footprint ItemFootprint Fragmented Record of Belobog Ancient Martial Arts ItemFragmented Record of Belobog Ancient Martial Arts Fragmentum Monster Armor ItemFragmentum Monster Armor
Friends Going Seperate Ways ItemFriends Going Seperate Ways Geomarrow Activation Element ItemGeomarrow Activation Element Geomarrow Probe ItemGeomarrow Probe
Gift From a Fan ItemGift From a Fan GilbertGilbert's Message Gold Subscription Commemorative Medallion ItemGold Subscription Commemorative Medallion
Golden Badge ItemGolden Badge Golden Limited - Aideen Token ItemGolden Limited - Aideen Token Growth Booster ItemGrowth Booster
Guild Insignia Rubbing (I) ItemGuild Insignia Rubbing (I) Guild Insignia Rubbing (II) ItemGuild Insignia Rubbing (II) Guild Insignia Rubbing (III) ItemGuild Insignia Rubbing (III)
Guild Insignia Rubbing (IV) ItemGuild Insignia Rubbing (IV) Guild Insignia Rubbing (V) ItemGuild Insignia Rubbing (V) Guild Insignia Rubbing (VI) ItemGuild Insignia Rubbing (VI)
Guild Insignia Rubbing (VII) ItemGuild Insignia Rubbing (VII) Guild Insignia Rubbing (VIII) ItemGuild Insignia Rubbing (VIII) Guqin Recording ItemGuqin Recording
HanuHanu's Dream Bubble Happy Gear ItemHappy Gear Harmonic Chime ItemHarmonic Chime
Heartbroken Lovers ItemHeartbroken Lovers High EldersHigh Elders' Secret Treasure Hilt-Wood From the Arbor ItemHilt-Wood From the Arbor
Ice-Fresh Raw Frostweave Salmon Slices ItemIce-Fresh Raw Frostweave Salmon Slices Icefire Lotus ItemIcefire Lotus Ignis Aureliae ItemIgnis Aureliae
Inspo Jade Abascus: Borderland ItemInspo Jade Abascus: Borderland Inspo Jade Abascus: Graceful ItemInspo Jade Abascus: Graceful Inspo Jade Abascus: Metrical ItemInspo Jade Abascus: Metrical
IPC Designer Invite ItemIPC Designer Invite Jade Abacus of Allying Oath ItemJade Abacus of Allying Oath Jade Tracer ItemJade Tracer
Jing YuanJing Yuan's Memories JulianJulian's Time Capsule Jun Jun, the Cuddly Bear ItemJun Jun, the Cuddly Bear
Kitchen Knife Sent to Spices Supreme Banner ItemKitchen Knife Sent to Spices Supreme Banner KluzerKluzer's Letter Lackluster Trash ItemLackluster Trash
Language Module ItemLanguage Module Life-Death Polypore ItemLife-Death Polypore Logistic Navigation Map ItemLogistic Navigation Map
Lost and Found Notice ItemLost and Found Notice Lucky OneLucky One's Black Card LuochaLuocha's Paper Flower
March 7thMarch 7th's “Origin” Marquise ItemMarquise Master CapoteMaster Capote's Fan Reply Card
Master CapoteMaster Capote's Life Wiki Master CapoteMaster Capote's Limited-Edition Snapshot Medicines of Unknown Use ItemMedicines of Unknown Use
MeiMei's Notes: Flowers MeiMei's Testimony Mei’s Notes: Learning About Housework ItemMei’s Notes: Learning About Housework
Memory-Peeking Film ItemMemory-Peeking Film Microfilm ItemMicrofilm Milk Powder Package ItemMilk Powder Package
Mimic Snow Slugs ItemMimic Snow Slugs Mine Cart Pin ItemMine Cart Pin Mine Cart Wheelset ItemMine Cart Wheelset
Mini-Neutron Bomb ItemMini-Neutron Bomb Misdelivered Letter 1 ItemMisdelivered Letter 1 Misdelivered Letter 2 ItemMisdelivered Letter 2
Misdelivered Letter 3 ItemMisdelivered Letter 3 Misdelivered Letter 4 ItemMisdelivered Letter 4 MundaniteMundanite's Insight
NamelessNameless's Memory Bubble New Guqin Recording ItemNew Guqin Recording New Tea “TingyunNew Tea “Tingyun's Blend”
Note - Searching for Mother in Dreamscape (I) ItemNote - Searching for Mother in Dreamscape (I) Note - Searching for Mother in Dreamscape (II) ItemNote - Searching for Mother in Dreamscape (II) Note - Searching for Mother in Dreamscape (III) ItemNote - Searching for Mother in Dreamscape (III)
Note - Searching for Mother in Dreamscape (IV) ItemNote - Searching for Mother in Dreamscape (IV) Numbers-got-Nerfed Trash ItemNumbers-got-Nerfed Trash Old Bell ItemOld Bell
Old Photo of Balakin ItemOld Photo of Balakin Old Photo: Mechanism Energy Hub ItemOld Photo: Mechanism Energy Hub Old Tin Box ItemOld Tin Box
One-of-a-Kind Trash ItemOne-of-a-Kind Trash Ordinary Trash ItemOrdinary Trash Override Module ItemOverride Module
Package for Peak ItemPackage for Peak Package With Illegible Recipient ItemPackage With Illegible Recipient Page of Past Dreams ItemPage of Past Dreams
Perfect Geomarrow Crystal ItemPerfect Geomarrow Crystal Pharmacological Studies on the Draught of Draconic Surge ItemPharmacological Studies on the Draught of Draconic Surge Photo of ArlanPhoto of Arlan's Back
Photo With March 7th ItemPhoto With March 7th Proof of Trust ItemProof of Trust Property Deed ItemProperty Deed
QingniQingni's Memories Recipe: Bright Future ItemRecipe: Bright Future Recipe: Classic SoulGlad ItemRecipe: Classic SoulGlad
Recipe: Dream Syrup ItemRecipe: Dream Syrup Recipe: Eternal Endurance ItemRecipe: Eternal Endurance Recipe: High Stakes ItemRecipe: High Stakes
Recipe: Pika White Soda ItemRecipe: Pika White Soda Red Signal Log ItemRed Signal Log Research Records “Intimidating” ItemResearch Records “Intimidating”
Research Records “Title Page” ItemResearch Records “Title Page” Revelation Slate ItemRevelation Slate Robot Settlement Level 1 Certification ItemRobot Settlement Level 1 Certification
Robot Settlement Level 2 Certification ItemRobot Settlement Level 2 Certification Robot Settlement Level 3 Certification ItemRobot Settlement Level 3 Certification Robot Shell ItemRobot Shell
Rubbings on Paper ItemRubbings on Paper Rusted Key ItemRusted Key Sad Gear ItemSad Gear
Shattered Cloud Knight Devastator Glaive ItemShattered Cloud Knight Devastator Glaive Shattered Jade Seal ItemShattered Jade Seal Silver Subscription Commemorative Medallion ItemSilver Subscription Commemorative Medallion
Small Chest Sent to the Sleepless Earl ItemSmall Chest Sent to the Sleepless Earl Soul-Soothing Paper Kite ItemSoul-Soothing Paper Kite Soulheal Special Mix ItemSoulheal Special Mix
Space Station Special Permit ItemSpace Station Special Permit Special Autoradiograph ItemSpecial Autoradiograph Square Rice Ball ItemSquare Rice Ball
Stainless Steel Plaque ItemStainless Steel Plaque Star-Shattering Blade of Truth ItemStar-Shattering Blade of Truth Steinway Falcon Luxury Speedster (Black) ItemSteinway Falcon Luxury Speedster (Black)
Steinway Falcon Luxury Speedster (Blue) ItemSteinway Falcon Luxury Speedster (Blue) Steinway Falcon Luxury Speedster (Gold) ItemSteinway Falcon Luxury Speedster (Gold) Steinway Falcon Luxury Speedster (Rental) ItemSteinway Falcon Luxury Speedster (Rental)
Strange Drill Ornament ItemStrange Drill Ornament Strange Prescription ItemStrange Prescription Sunshine ItemSunshine
Surveillance Footage ItemSurveillance Footage Swarthy Trash ItemSwarthy Trash Television (Limited Edition) ItemTelevision (Limited Edition)
Testimony From the Clumsy Lady ItemTestimony From the Clumsy Lady Testimony From the Suddenly Excited Man ItemTestimony From the Suddenly Excited Man The Adventurous Moles: Hidden Treasure — "The Crates Are the Keys" ItemThe Adventurous Moles: Hidden Treasure — "The Crates Are the Keys"
The Adventurous Moles: Hidden Treasure — "The Missing MinerThe Adventurous Moles: Hidden Treasure — "The Missing Miner's Lamp" The Adventurous Moles: Hidden Treasure — "The Unexpected Parchment" ItemThe Adventurous Moles: Hidden Treasure — "The Unexpected Parchment" The Adventurous Moles: Hidden Treasure — "Treasure Hunt on the Battlefield" ItemThe Adventurous Moles: Hidden Treasure — "Treasure Hunt on the Battlefield"
The Adventurous Moles: Hidden Treasure — Postface ItemThe Adventurous Moles: Hidden Treasure — Postface The Adventurous Moles: Hidden Treasure — Preface ItemThe Adventurous Moles: Hidden Treasure — Preface The Adventurous Moles: Hidden Treasure — Table of Contents ItemThe Adventurous Moles: Hidden Treasure — Table of Contents
The AmicassadorThe Amicassador's Seal Thermal-Powered Mechanical Mining Pick ItemThermal-Powered Mechanical Mining Pick Thousand Stars Access Authentication ItemThousand Stars Access Authentication
ToddTodd's Snack Toddler Clothing Package ItemToddler Clothing Package Torn Manuscript Fragment ItemTorn Manuscript Fragment
Transcribed Scripture ItemTranscribed Scripture Treasure Map ItemTreasure Map Treasure Map Indicating the Location of Ignis Aureliae ItemTreasure Map Indicating the Location of Ignis Aureliae
Treasure Map: Cannon ItemTreasure Map: Cannon Treasure Map: Information Terminal and Display Monitor Set ItemTreasure Map: Information Terminal and Display Monitor Set Ultra Nickel Part ItemUltra Nickel Part
Undelivered Letter ItemUndelivered Letter Unknown Puzzle Fragment ItemUnknown Puzzle Fragment Unnoteworthy Trash ItemUnnoteworthy Trash
Unpretentious Trash ItemUnpretentious Trash Unremarkable Trash ItemUnremarkable Trash Unspectacular Trash ItemUnspectacular Trash
Unusually Colored Lodestone ItemUnusually Colored Lodestone Used Item Auction Pamphlet ItemUsed Item Auction Pamphlet Utopon Unicycler ItemUtopon Unicycler
Videotape: Dim Blue Dot ItemVideotape: Dim Blue Dot Videotape: Doomsday ItemVideotape: Doomsday Videotape: Justice ItemVideotape: Justice
Weapon Shards ItemWeapon Shards Wen FuruiWen Furui's Gift Whirlbolt Pneumatophore ItemWhirlbolt Pneumatophore
YukongYukong's Exchange Diary Center Room Key ItemCenter Room Key Edited note ItemEdited note
Light Bridge Key ItemLight Bridge Key PelaPela's Notes Portrait With a Clue ItemPortrait With a Clue
Praise of High Morals ItemPraise of High Morals Right Room Key ItemRight Room Key ZhongshanZhongshan's Letter

Comment

Post (0 Comments)

Author

Honkai: Star Rail Walkthrough Team
This article was created by Game8's elite team of writers and gamers.

    Walkthrough Menu

    Please participate in our
    site improvement survey 12/2024
    Would you assist in
    improving Game8's site?
    ×
    This survey will take about 1 minute.
    Your answers will help us to improve our website.
    We are listening to our users' valuable opinions and discussing how to act on them.
    The information collected through this survey will be used for the purpose of improving our services. In addition, the information will only be disclosed a part of a statistic in a format that will not allow identification of personal information.
    Begin Survey
    Not Now
    ×
    Please rate each item regarding Game8.co's Advertisements.
    Amount of Ads
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Placement of Ads
    Timing of Ad Display
    Ad Loading Speed
    Safeness of Ads
    Content of Ads
    ×
    Please rate each item regarding Game8.co's Quality of Articles.
    Amount of information
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Frequency of updates
    Speed of new information
    Accuracy of articles
    Understandibility of articles
    Readability of sentences
    ×
    Please rate each item regarding Game8.co's Usability of the Site.
    Ease of finding information
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Loading Speed
    Use of Color
    Font Size
    Visibility of Images
    Easy to Understand Layout
    ×
    Please rate each item regarding Game8.co's Message Boards, Comments.
    Ease of Writing
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Readability
    Ease in Finding Information
    Comment Quality
    Comment Quantity
    Admin Response
    ×
    Please rate each item regarding Game8.co's Site's new design.
    Please rate our site's new design
    Very Dissatisfied
    Somewhat Dissatisfied
    Fine
    Somewhat Satisfied
    Highly Satisfied
    Do you think that the website's design change makes the site easier to use?
    Has the new design made it easier for you to find information on the site?
    Has the new design improved the overall visual appeal of the site?
    How would you rate your overall satisfaction with the new design of the site?
    ×
    How likely are you to recommend Game8 to someone you know?
    Very Unlikely
    0
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    Very Likely
    If you have other opinions regarding potential improvement to the website, please share them with us. We would appreciate your honest opinion.
    Note: This is a free response section, so you can proceed without entering anything.
    Note: Please be sure not to enter any kind of personal information into your response.
    ×
    Thank You
    ×
    Thank you for participating in our survey! Your answers will help us to improve the quality of our website and services.
    We hope you continue to make use of Game8.
    Close
    For other opinions or comments, go here.

    Latest News and Updates

    Tier Lists

    Gacha Guides

    Character Guides

    5-Star Characters

    4-Star Characters

    Character by Elements

    Characters by Path

    Beginner Guides

    Mission Guides

    Light Cone Guides

    Light Cones by Rarity

    Light Cone Types

    Relic Guides

    Map Guides

    Item Guides

    Enemies and Bosses Guide

    Cosmetic Guides

    Japanese Walkthrough

    All HoYoverse Wikis

    Rankings

    Popular Articles
    Message Board
    • We could not find the message board you were looking for.

    Gaming News

    PR
    20241121_Gift_Sidebar_co_03

    Popular Games

    Recommended Games

    All rights reserved

    Copyright © 2024 HoYoverse, COGNOSPHERE. All Rights Reserved.

    The copyrights of videos of games used in our content and other intellectual property rights belong to the provider of the game.
    The contents we provide on this site were created personally by members of the Game8 editorial department.
    We refuse the right to reuse or repost content taken without our permission such as data or images to other sites.

    PR