Det. Supt. Peter Boyd (played by Trevor Eve) is the leader of a multi-discipline police team of detectives and scientists, the Cold Case Squad, which investigates old, unsolved murder cases using modern methods and new technology that may not have been available during the original investigation.
Working from his home in a converted windmill, Jonathan Creek is a magician with a natural ability for solving puzzles. He soon puts this ability to the use of solving impossible crimes and mysterious murders.
Detective Inspector Jack Frost is an unconventional policeman with sympathy for the underdog and an instinct for moral justice. Sloppy, disorganized and disrespectful, he attracts trouble like a magnet.