Billboard Investigator Hidden Mission Guide

Billboard Investigator is a hidden mission that can be found at the Clock Studios Theme Park in Honkai: Star Rail. See how to unlock this quest, how to complete it, and all the rewards here.

How to Unlock Billboard Investigator

Investigate the Crime Scene

Billboard Investigator NPC Location
Map View	World View

The Billboard Investigator mission can be unlocked by checking out the terrifying crime scene near the Clock Studios Theme Park entrance.

Clock Studios Theme Park Guide

Billboard Investigator Walkthrough

How to Help the Billboard Investigator

	Billboard Investigator Walkthrough
1	After investigating the crime scene. Talk to the Billboard Investigator NPC.
2	Then, interact with the Sodas and Popcorn in the crime scene.
3	Talk to the Billboard Investigator again to report your findings. You may reply whatever you want.
4	After a server reset, the Billboard Investigator will send a message to you. Reply to them in order for the hidden mission to end.

Billboard Investigator Rewards

Get the A Variation Named “I” Achievement

After completing the Billboard Investigator mission, you will get the achievement called A Variation Named “I” Achievement. Claiming it will reward you with 5 Stellar Jades.

All Achievements Guide

Get a Dreamscape Pass Sticker

The Dreamscape Pass Sticker called 3... 2... 1... Action! will also be unlocked after completing the Billboard Investigator mission. This sticker is under the collection, The Most Absurd Stage.

All Dreamscape Pass Stickers and Rewards

Honkai: Star Rail Related Guides

All Missions and Mission Types

All Hidden Mission Guides

All Hidden Mission Guides