A murder with no weapon or motive. A detective on edge. A community that wants answers. Impurity is the first in a series of six books featuring Leeds based Detective Inspector Stewart Gardener. One fateful night, DI Stewart Gardener intervenes in a street brawl, and his wife is shot dead. Finding his wife’s murderer is never far from his mind, but with no leads and a hazy recollection of events, it seems hopeless. Soon he is presented with a shocking case. A man is found dead in a grubby apartment, and It is not long before another man meets the same fate.

Detective Inspector Munro is a burly Scottish policeman who doesn’t suffer fools gladly. Detective Sergeant West is an intelligent young woman, new to the force, with a lot to prove. When a missing person case lands on their desks, Munro is skeptical there is much to it. But their investigation soon comes to some strange findings, and before long a body is found. With a serial killer on their hands, they must act fast to trace a woman placed at the scene of the crime. Yet discovering her true identity, let alone finding her, proves difficult. And as the plot thickens they realise the crime is far graver than either of them could have imagined.

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. 

Meet Janine Lewis. A single mom of three and Manchester’s newest detective chief inspector. Her cheating husband walked out the day she got promoted. Now she’s six months pregnant with his baby and in charge of her first murder case. The body of a deputy head teacher is found on a lonely allotment. Gutted—his stomach sliced open—and left for dead. The only witnesses are a dying elderly man and a seven-year-old girl. And now the prime suspect has disappeared.

A woman has been murdered and mutilated in her own home, with her liver cut out and a message left within it. Tasked with leading the case, DI Tudor Manx identifies several suspects, including the victim’s estranged husband. But all trails run cold. Then, another victim dies—and from the modus operandi. It seems that North Wales Police are dealing with a serial killer. But who would target the inhabitants of such a peaceful island?