The enigmatic Dr. Helen Magnus and the Sanctuary team are back on their quest to study and protect the strange and terrifying creatures that secretly populate our world.

Dr. Jack Gramm is a college professor who moonlights as a forensic psychiatrist for the FBI. Gramm receives a death threat claiming he has only 88 minutes to live. Now he has to put together the clues and try to solve the biggest crime of his career. He narrows down the possible suspects, who include a disgruntled student, a jilted former lover, and a serial killer who is already on death row, all before his time runs out.