When a deep-sea diver is murdered on the job, his body and suspected co-workers must remain in a high-tech decompression chamber for four days, leaving the team to complete an unorthodox investigation from outside the tank.
The murder of a young store clerk takes a strange turn when the team discovers his history as a hacker.
When a relationship therapist is murdered, it appears that her access to the secrets of her powerful clients led to her death. But a rare object found in her possession complicates the case.
The time for Reid to meet his mystery woman arrives, but the BAU's current case involving a string of peculiar abductions makes him fearful for her safety.
Castle and Beckett delve into the world of extreme sports when a mysterious motorcyclist shoots an up-and-coming professional skateboarder.
