Enter "ACE" as a combination to open the victim's locker. Enter "1614" as a password to open the locker belonging to the victim's mother.
Enter C#, C#, C#, B, C#, D, E, D, C# to unlock the piano lock box in the victim's apartment.
When at the crime lab the ME will ask you to put the letters that match the letters on the note.
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,