Corby Sullivan

The BAU investigates when several young men and women are victims of disfiguring acid attacks. Also, Dr. Reid begins to settle into his new surroundings.

Raylan turns to an old friend for help after Ava makes a drastic decision.

The team must outsmart mentally unstable ex-Scorpion member Mark Collins when he kidnaps Toby and threatens to kill him if his demands are not met.

After a middle of the night break-in in a suburban home on the edge of the Vegas desert reveals a body dump of a college-aged kid, our CSIs discover an abondoned military compound now being used to house a small cult. Once inside, we discover a mass suicide has taken place that coincides with a meteor shower the night before, but with 11 bodies and 12 beds, Grissom surmises that our killer may be missing.