Hours after being promoted to detective inspector, Maggie Forbes learns her husband has been brutally gunned down and killed.

Tired of sitting at home, Maggie disobeys orders and sets out to find her husband's killers.

Having withdrawn her resignation, Maggie tries to help both her son, Stephen, who has turned to alcohol in the wake of his father's murder, and her friend Susan Scott.

After a woman is found dead in a love nest, Maggie gets caught up in a web of shocking revelations.

Maggie finds herself at odds with a fellow officer while investigating the stabbing death of a young gay man on the London Underground.

While Maggie investigates a businessman suspected of torching his own premises, she is offended by being offered a bribe, but even stranger offers are waiting around the corner.