Young FBI agent Nicole Bonnet receives a mysterious package. Inside she finds a complicated logical puzzle that appears to be a message from a serial killer. This is just the beginning of an epic duel of minds between Nicole and the ruthless murderer, who leaves playing cards by the bodies of his victims as signature.

Bonnet will have to use all her wits to solve the case and stop the murderer before he strikes again.

Does she have what it takes to understand the mind of a psychopath, as complicated as his puzzles?

Key Features:

• Dark plot full of twists
• Challenging puzzles that require logical thinking
• Pieces of evidence that need to be found and analyzed
• Detailed locations from various places in the United States