A New York psychologist relocates to Los Angeles to recover from the trauma of witnessing a patient commit suicide in his office. Seeking solace and a change of pace, he takes over the practice of a murdered colleague and starts leading a therapy group made up of eccentric and troubled individuals. Each member has their own dark secrets, presenting a series of psychological puzzles that intrigue and challenge him. As he becomes more involved, he starts finding himself pulled into the mystery surrounding his predecessor's death.

Drawn deeper into the lives of his patients, he begins an affair with a mysterious and alluring woman, whose presence is as enigmatic as the puzzles within his therapy group. Tensions heighten as he realizes that one of his patients might be the killer responsible for both suicides and additional deaths within his new circle. He races against time to uncover the identity of the murderer, navigating through layers of deception and emotional entanglement, only to find that nothing is as it seems.