Find the Secret Code: An Elimination Mystery Puzzle Book

One missing person, one code, tens of thousands of possible combinations. Do you have what it takes to crack the case in this elimination-style puzzle book? The clock is ticking...

A world-famous cryptographer has vanished without a trace. She spent years creating an unbreakable security system, and now, in a cruel twist of irony, unlocking it may be the only way to find her. Then investigators discover a secret file marked "X," containing a list of names and 12 cryptic clues. Somewhere amon...