Lifestories (originally Signs of Life) is an American medical drama television series that premiered August 20, 1990, on NBC. Done in a documentary style with off-screen narration by Robert Prosky, Lifestories was an attempt to make an extremely realistic medical drama answering questions like, "What is it like to be told that you have advanced colon cancer?", and "Exactly what goes on during the first 45 minutes of a heart attack?", such as in the show's first and third episodes, starring Richard Masur as the character Don Chapin, and Michael Murphy as the character Frank Roberts, respectively.