Primeval (2007)

S2E6 Traitor Revealed

Title: Betrayal Uncovered Plot: The team is dispatched to handle a Columbian Mammoth wreaking havoc on the M25, while trying to rescue a stranded driver before her panic provokes the creature into another assault. Simultaneously, Connor and Abby look for the lost Rex and Caroline, and Stephen discloses his connection to Helen Cutter. As Connor and Cutter enact their plan to unveil the traitor within the ARC, Oliver Leek's nefarious intentions come to light, prompting the team to urgently pursue him.