New recruit Thelma Parker catches the eye of Harper, but proves to be less popular with the rest of the team, and an injured boxer causes concern for the staff at the hospital. Dr. Weatherill finds herself caught in an ethical battle when the parents of a dangerously ill baby refuse treatment, while Samantha receives unwanted news.

Samantha struggles to cope with the reality of her recent discovery and takes desperate action which leaves her life hanging in the balance. Frankie and Gordon attempt a daring rescue to help a teenager in danger on the weir, while Ken has something to hide from Harper. Jeff's casual encounter with a friend of Lizzie's suddenly turns serious when he realises his career could be at risk.