Dr Nash clashes with another doctor over treatment for a paranoid man

Staff tensions break the surface over an elderly patient who needs ECT.

Nash's continued medical non-compliance causes him to spiral dangerously out of control, straining his own sanity and the well-being of his patients.

The onset of schizophrenia in a young boy causes heartache and soul-searching for the boy's parents, while Kate realises that she is missing Nash who is in recovery.

A distressed schoolgirl with an awful secret causes anxious moments for the staff of Muirpark Hospital, and exam pressure forces Kate and Shug to breaking point.

Tensions run high as the junior doctors receive their exam results and Nash finally meets his equal with the arrival of a charismatic new patient.