After someone passes Trailblaze Level 14 and finishes the Jarilo-VI Trailblaze Mission “Lying in Rust,” the Honkai: Star Rail “Old Foreman’s Treasure” Companion Mission for Hook unlocks. This is a fairly straightforward side quest. Players end up being tasked with helping her father, Fersman. However, like the Arlan Companion Quest, there’s a bit of an investigation involved. This means there’s a logic puzzle to help figure out who stole the vein detector in Honkai: Star Rail.
So who stole the Honkai: Star Rail “Old Foreman’s Treasure” vein detector?
After you help Fersman and get him to Natasha’s clinic to get patched up, the Trailblazer and Hook will head to the vagrant camp in the minds. There are four possible candidates who might have stolen the vein detector in Honkai: Star Rail, and this is a situation in which the person who is guilty in “Old Foreman’s Treasure” will lie and the others will tell the truth.
In a way, you don’t need to bother with the logic part of it. When talking to the four candidates, the cook is the one who will behave in the most suspicious manner. However, during interrogations, the cook will blame the helper, the helper will plead innocent, the merchant will blame the cook, and the tailor will plead innocent.
So, the cook is the thief. Selecting him will mean you’ll need to follow Hook and catch him before he sells the vein detector to Sampo. You’ll get it back, but it’s broken. Sampo will suggest going to Balaway in Boulder Town to see if it can be repaired. Claim you’re willing to sell it, then tell your “boss” Hook it’s time to go after you find out what’s wrong. Head back to Fersman, who is still recovering at Natasha’s office, and the quest will end. You’ll get 6 Adventure Logs, 60 Stellar Jades, 200 Shields, 350 Trailblaze EXP, and 20,000 Credits.
Honkai: Star Rail is available for PCs and mobile devices, and PS4 and PS5 versions are in development.
Related: Honkai Star Rail: Revive Characters in Simulated Universe on Gamer Journalist