
Dr. Mark Sloan is chief of Internal Medicine at Community General Hospital -- and sometime consultant to the local police department. When he's drawn into a case, he combines sleuthing and medicine to solve the crime. That crime is usually one his detective son, Steve, is working on as a member of the local police department. Dr. Sloan's medical colleagues, including doctors Amanda Bentley, Jack Stewart and Jesse Travis, are also frequently drawn into his investigations.

Dr. Sloan goes undercover at an ice cream factory to get the scoop on the murder of a private detective.

Dr. Sloan is less than thrilled to have his sister move in after the police discover a body in the closet of her new home.

Mark investigates the death of a plastic surgeon from an overdose of laughing gas; a surfer becomes Mark's patient after colliding with a pier.

Mark (Dick Van Dyke) is targeted in a murder plot after discovering too much about the death of a plastic surgeon. With Scott Baio.