Hints
Passwords
The password of victim's locker is "ACE".
The password of locker of victim's mother is "1614".
The password of piano is "CCCBCdEdC" (C, #, C, #, C, #, B, C, #, D , E , D, C, #).
Typewriter Puzzle
At the end of the investigation, you need to choose the right letters on the keyboard sent from the crime lad. There are 12 letters each stacked 3 high:
First line ... second H, third Y, third Q, first A, first S, third J.
Second line first F, second R, first E, second T, second C, third O.

Embark on an inspiring mission of human connection beyond the UCA. Sam — with companions by his side — sets out on a new journey to save humanity from extinction. Join them as they traverse a world beset by otherworldly enemies, obstacles and a haunting question: should we have connected?