The BAU feels the heat when they head to the famous Santa Monica pier to investigate burned bodies left near there, and Rossi reconnects with his former Marine sergeant from Vietnam.
The staff greets Hathaway's return with a surprise party.
The loss of air conditioning during a heat wave raises tension in the ER.
Dr. Benton works a straight 48-hour shift to make up for time he took off while caring for his mother, which has serious repercussions.
Hathaway takes an ambulance ride-along with paramedics, while Dr. Ross treats a patient that really heats things up in the ER.
