Mark Costello

When the kill count of a mass-murdering arsonist active in a small town reaches 31, the BAU are called in.

Jesse meets Danny's co-worker Robin and manages to arrange a date with her by using Michelle. However, when Robin bumps into an old date of Jesse's, she realises that she is reluctant to date someone who is quick to date and quick to leave.

Sorenson gets involved with a witness from the `exotic' dancer killing and finds himself a lot of trouble.

MacGyver aids a woman after she is evicted from her apartment, and then learns her former slumlord has been found dead.