Within hours of being promoted to Detective Inspector, Maggie Forbes learns that her husband has been brutally gunned down and killed.

Despite being ordered to stay off the case, Maggie sets out to track down her husband's killers - and makes a fateful decision.

Maggie's son Stephen has taken his father's murder badly and turned to alcohol. Now, she must attempt to help her son and one of her best friends.

Maggie is assigned to investigate the death of a woman discovered in a love nest, only to find herself caught up in a web of shocking revelations.

A young gay man is knifed to death on the London Underground. As Maggie investigates the chilling hate crime, she finds herself at odds with a fellow officer.

A businessman is suspected of torching his own premises. When Maggie investigates, she finds herself offered a bribe - and even stranger offers are to follow.