A young woman is brutally attacked on her way home. It looks like she was the victim of a jilted—and twisted—ex-lover. But then two more women, also engaged to be married, are found dead. The press call the killer the "Surrey Stalker". And there’s a stack of similar cold case files. The pressure is on for young, ambitious DI Rob Miller. But with all the time he’s spending at the office, Rob’s also running a fine line trying to keep his fiancée, Yvette, onside as they try to plan their wedding.

When there is a violent murder at a historic Home Counties golf club, Superintendent John Lambert himself discovers the crime. For the first time in a long career, he finds himself conducting a murder inquiry among people he knows well. The victim is the chairman of the golf club and a prominent local businessman, and it is soon clear that the members of the Club Committee are the chief suspects. They are all prominent members of the local community, and Lambert is saddled with a Chief Constable who is uncomfortably aware of the fact.

Jen Garner tries her best to be ‘wife and mother of the year’. She helps organise school plays and accompanies her husband to company dinners, all with a big smile on her face. But Jen has started to receive strange gifts in the post...first flowers, then a sympathy card. It could just be a joke; that’s what she tells herself. But then the final ‘gift’ arrives, and Jen has to question why somebody is so intent on shattering her life into pieces....

It’s the night shift worker who finds them. Huddled in a hospital store cupboard is elderly Edith Higgins. Knifed to death. Sitting behind her is Staff Nurse Lily Frampton, a scalpel clasped in her blood-soaked hand. No one can understand why this kind-hearted, dedicated nurse would brutally murder a frail patient she’s spent months caring for. That same day, mild-mannered schoolteacher Rod Black is found surrounded by the battered bodies of his pupils. Why would a well-respected teacher beat five schoolboys to death?

Callum is lured to an isolated boathouse by an attractive older woman. When she gets him alone, she knocks him out with a single blow. Surrounded by hills and lakes, Still Waters is home to a close-knit community of wealthy retirees. It's an unlikely setting for violence. The police don't take Callum's disappearance seriously: he's 24-years-old, after all. But Callum's mother, a Still Waters resident, knows that something is very wrong. Then a body is discovered floating in the lake. Head bashed in. But it's not Callum. And someone tweets: Come out to play one last time, Alice.