Nadine Nicole Heimann

When five showgirls are found dead in their Green Valley home, Sara arrives at the scene in time to hear a few strained words from yet another victim before she dies, leaving the team to wonder if they have a serial killer on their hands.

Walter takes a perilous swim to rescue a woman trapped in the La Brea tar pits, and Paige's mother maximises Ralph's troop cookie sales.

A promising student wakes up to the hangover from hell when he is found wandering the streets covered in blood and wielding an axe. As the investigators attempt to piece together the night's events, Flack struggles to keep his cool and Mac develops a bond with the suspect.

Avery and the team look into a new cyber threat that makes it possible for arsonists to start home fires more surreptitiously. Elijah's ex gets a job out of town and wants to take their daughter with her.