Called to a Southampton nightclub, Detective Inspector Helen Grace cuts the duct tape from the asphyxiated victim and discovers she knows him.
A man from the double life she has concealed from her superiors, Helen is determined to find his murderer - while keeping their relationship hidden at all costs.
When a new victim is found, Helen works around the clock to stop her life unravelling. She'll do anything to solve this case - but dare she reveal her own darkest secrets and lose everything?