Essie is shocked when Parker turns up at the hospital. He's been on the run and now needs her to help his injured friend. Zosia harbours a secret from Ollie, and is horrified to learn that Isaac knows what it is. Fletch is relieved when Serena steps in to help him with his daughter's adolescent woes.

Serena faces her demons and comes to a heartwrenching conclusion. Zosia takes action when Isaac reveals his true colours. Mo risks her professional reputation when she goes the extra mile.