Known signature
Separate what the repeated evidence establishes from what remains unknown.
Free reader companion
Build your own evidence board.
The official six-page Case File includes the known signature, a theory tracker, Logan Hollister’s field profile, book-club questions, and printable case notes. It contains no ending spoilers.
Theory board
Track the connection, the source of the hidden crimes, and the detail that keeps pulling you back.
Discussion file
Eight spoiler-safe questions for solo reflection or the opening half of a group discussion.