Natalie Krill

Investigating a road crash, Gail and Chris discover one of the vehicles involved is linked to the abduction of a nine-year-old girl. A search begins to find the car's missing driver, while an interrogation of the youngster's parents reveals more disturbing evidence.

Andy and Chris unwittingly endanger a huge drug bust, and Andy tries to rectify the situation by accompanying Swarek on an undercover operation, until a change in plans puts both their lives in danger.

Tension rises between Andy and Swarek, but they put aside their feelings while hunting for an escaped prisoner. Meanwhile, Chris and Traci try to reconstruct the missing notes of a crucial court case, and Dov and Gail investigate a mysterious amnesiac.

Eric finds that his negotiation deal for a talented software engineer is being compromised, when correspondence between the team and the kidnapper is intercepted.

Castor pursues the clones in order to obtain original tissue samples; Helena is examined by a new villain.

Captive in the Castor compound, Helena prepares her escape. Cosima dares to go on a date, but woe betide any woman who has slept with one of the male clones.