Ultimatum:

The team are following Nigel Wren (Celyn Jones) who has been grooming young girls online. They track his conversations in a chat room and discover that he is posing as a thirteen year old girl Ginni. D.S. Max Carter (Christopher Fox) is keen to arrest Wren but D.C. Grace Dasari (Amita Dhiri) is hesitant and insists they get further evidence to ensure a conviction. P.C.’s Kirsty Knight (Sarah Manners) and Leon Taylor (Dominic Power) are sent undercover to observe Wren’s movements. They trail Wren as he leaves for work giving D.C. Jacob Banks (Patrick Robinson) and D.C. Terry Perkins (Bruce Byron) time to gain entry to Wren’s home allowing them to set up cameras and put a trace on his internet activity.

Max’s behaviour continues to be erratic. Mickey (Chris Simmons) is angry when Max forces him to crash their car into Wren in an attempt to stop him returning home too early and discovering the team. Max’s reckless tactics work and the team have enough time to set up the observation equipment in Wren’s home. The trace on Wren’s computer picks up a conversation between him and a young girl Kelli Sutton (Poppy Lee Friar) they are alarmed when Wren makes an arrangement to meet Kelli under the guise of Ginni.

The team are still unsure whether or not they should pick Nigel Wren up immediately or to let him meet Kelli and catch him “in the act”. They are concerned for Kelli’s safety but Max is adamant they let Wren meet Kelli and demands they continue the ‘obbo’ on Wren. When they go to Kelli’s home Sergeant Masters and the troops discover that she has been looking up train times to Waterloo, they rush into action and are deployed to Waterloo. They find Nigel Wren and arrest him but there is no sign of Kelli, will the team find her before it’s too late?

Mickey sees him drop a wrap of cocaine whilst on duty. Max claims he confiscated the cocaine the night before but they refuse to believe a word he’s saying. Max is given an ultimatum by Terry What will his decision be?