Christopher May

When a young couple decides to go skinny-dipping in a hot spring, their spontaneity is ruined when they find the remains of a skeleton in the mud. Brennan and Booth soon discover the skeleton is that of Tripp Goddard, a professional motorcycle racer who just won the Super Grand Prix. The team immediately suspects Danny Fitz, the runner-up in the race and Tripp's main rival, to be the murderer. But just when Brennan and Booth think they have it solved, a fiery motorcycle crash claims another victim, and the circumstances seem far from accidental. Meanwhile, Dr. Lance Sweets forces Brennan and Booth to join him on a double-date in an effort to encourage them to interact in a social setting, away from any of their cases.

When a young boy who went missing in San Diego on Halloween suddenly reappears one year later, the BAU must work fast when another trick-or-treater disappears under similar circumstances. Series star Thomas Gibson directed the episode. Gibson's son, Travis, guest stars as Jake McCauley.

Natalie is running for the school board in an effort to keep Julie's school from being closed. She's set up her office in an abandoned storefront, and she has a crew of supporters helping her with signs, mailings, and phone calls. Suddenly, shots ring out, and the office is riddled with bullets. Monk, Stottlemeyer, and Disher go to a nearby rooftop, where they find a dead security guard and a note from the sniper that demands that Natalie withdraw from the race.

When the 1958 suicide of a celebrated Philadelphia disc jockey is discovered to have actually been a murder, Rush and the team must find the truth of this public persona's private life by decoding a message hidden in his final broadcast.

The CSI team investigates the murder of a young victim dressed as a superhero.