Brilliant, vivacious GP Gemma Foster has her life torn apart when she investigates whether her husband is harbouring a dark secret. The truth will shock her to the core.

Reeling from the secrets she has uncovered, Gemma has a decision to make - but a visit from a surprise patient means she also faces an acute professional dilemma.

Gemma decides on a new start with Simon, but her medical career begins to fall apart.

Gemma is determined to expose Simon at last. But how far will she go to achieve her goal?