Samantha Raye Droke

Christopher worries that Lorelai is not fully committed to their marriage.

Arwin's mother gets married, so Zach and Cody invite him to stay with them for a few days.

The case of two high school students, one dead and one missing, lead the CSIs into the underbelly of streetcar racing and a tangled web of deadly competition.

Allison's dreams about a woman trapped in a fire could help solve mysterious fire-related deaths; Devalos considers running for mayor.