After a nightmare shift in A&E during which a patient dies, experienced Doctor Lucinda Edwards faces an investigation into her fitness to practise.

Lucinda covertly digs into the circumstances which led to her patient's death while under increasing scrutiny from the Medical Investigation Unit.

The inquest into the patient's death uncovers shocking new information which raises questions for both Lucinda and the Medical Investigation Unit.

Lucinda fights to defend herself as the investigation intensifies and her home life crumbles, but Norma and George disagree about their new evidence.

George and Norma must decide if they can trust Lucinda as her search for the truth becomes dangerous and she turns to help from unexpected places.