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.

In public Gemma plays the perfect wife, while secretly concocting a plan to ensure she comes out on top - only to make new discoveries about the full extent of the secrets that those around her are holding on to.

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?