Because real investigations are reading.
Detectives, auditors and judges don't solve cases with flashes of inspiration. They read carefully, cross-reference, and notice the one timestamp that doesn't match the statement. That's the experience we wanted to put in a box.
Every case is written so it can be solved from the documents alone. No guesswork, no trick ending. When you open the sealed envelope, the solution should feel inevitable: the answer was in the file the whole time.
The documents are designed to look like the real thing: typed witness statements, handwritten registers, printed access logs, forensic reports and photographs. You'll spread them across the table, scribble on them and argue over them.