Ryan Doom

When a dead man is found with human bite marks on his body, a witness claims the deceased was attacked by a zombie.

A sailor who lost two siblings -- Marines who were killed in the line of duty -- needs a bone marrow transplant; Bishop returns to Oklahoma for Thanksgiving.

Agent Bishop questions her previous work at the NSA after being sent to Gitmo to gather evidence for a Navy chaplain murder case; Bishop's brothers visit for Thanksgiving.

A hypnotist and bank robber becomes the prime suspect in a murder investigation; the team probes the death of a school counselor with a gambling problem.

Sara Jennings was on her way to the Bahamas via Miami for a class trip when a wild night of partying, drinking and sex got out of control. Now, the CSIs must discover who she was with and what happened that night in order to find her. Meanwhile, Horatio's past in New York City resurfaces when an old unsolved case lands on his desk.

When Jimmy returns to work, he hires Sabrina’s cousin Shelley (guest star Kate Micucci) – a/k/a “Dead Tooth” – to babysit Hope. Meanwhile, Burt tries to get Virginia to quit smoking.