88 Minutes (2008)

Al Pacino stars as Dr. Jack Gramm, a college professor who moonlights as a forensic psychiatrist for the FBI. When Gramm receives a death threat claiming he has only 88 minutes to live, he must use all his skills and training to narrow down the possible suspects, who include a disgruntled student, a jilted former lover, and a serial killer who is already on death row, before his time runs out.