Student nurse Helen Chatsworth says goodbye to her colleagues as her work experience at Holby General Hospital comes to an end. Staff nurse Adele Beckford tries to organise a farewell party for her – but will anyone have time to give her a proper send-off? As Helen leaves, a new face appears in the department. Locum Tom Harley joins the team as a replacement for Mike Barratt, who has left to set up a casualty operation in Africa. He soon brings a smile to Charlie's face, when he makes Mark squirm. Josh and Ryan clash over handling a patient and a memory man pushes his luck too far and ends up a casualty. A dodgy MOT car racket leads to tragedy and the man responsible, is investigated by the police, because his daughter was involved.