Mystery is the stage name and alter-ego of Erik James Horvat-Markovic, a Canadian author and entertainer. He is the most widely known of the pickup artists and one of the main characters of The Game: Penetrating the Secret Society of Pickup Artists (2005) by Neil Strauss.

Mystery used to work as a magician and has self-taught himself psychology. Combining both, he created the Mystery Method or the M3 Model. An algorithmic system in seducing women. According to Cameron Teone, Mystery's good friend, the Mystery Method was born out of strip clubs.