Scott Vance

The BAU heads south to investigate a fast-moving UnSub whose signature matches that of a serial killer from 30 years ago. Also, the team learns that someone is tracking their cases and replicating crimes the BAU is solving.

See how Patrick Jane first met Teresa Lisbon and worked his first case with the CBI on the series’ landmark 100th episode.

A series of coincidences puts Scully in contact with someone from her past, causing her to question her romantic and professional choices.

Sloane orders Sydney to be tortured and killed.

Vaughn confirms that K-Directorate has hired a known assassin, a.k.a. "The Snowman" for his favored use of an ice-pick as a weapon, to take out Khasinau. Meanwhile, passion begins to spark between Sydney and Noah (Peter Berg, "Chicago Hope"), while new revelations about Sydney's mother prove disturbing to Jack.

The Connors are on alert after their house is robbed. One Terminator terrorizes Ellison, while another gets dangerously close to John. Derek and Jesse continue to get reacquainted.