Joanna faces dilemma on both a personal and professional level, while Sam sets his heart on a romantic goal and Andrew tries to avoid appearing deceitful.

A chemical spillage outside the Black Swan plunges Cardale into a state of emergency, and it's up to Andrew and Same to save lives.

Sam tries to reunite a family torn apart by a terrible secret, while Joanna sets off to see Tom in Scarborough - but has trouble telling him the reason for her visit.