He's your perfect date. You're his next victim. When the tortured body of a young woman is found in a dumpster, her eyes swollen shut and her clothes soaked with blood, detective Erika Foster is one of the first at the crime scene. The trouble is, this time it's not her case.

On a cold icy morning, a mother wakes to find her daughter’s blood-soaked body frozen to the road. Who would carry out such a horrific killing on the victim’s doorstep? Straight off her last harrowing case, Detective Erika Foster is feeling fragile but determined to lead the investigation. As she sets to work, she finds reports of assaults in the same quiet South London suburb where the woman was killed. One chilling detail links them to the murder victim - they were all attacked by a figure in black wearing a gas mask.

When Detective Erika Foster receives a tip-off that key evidence for a major narcotics case was stashed in a disused quarry on the outskirts of London, she orders for it to be searched. From the thick sludge the drugs are recovered, but so is the skeleton of a young child. The remains are quickly identified as seven-year-old Jessica Collins. The missing girl who made headline news 26 years ago.

In the dead of a swelteringly hot summer's night, Detective Erika Foster is called to a murder scene. The victim, a doctor, is found suffocated in bed. His wrists are bound and his eyes bulging through a clear plastic bag tied tight over his head. A few days later, another victim is found dead in exactly the same circumstances. As Erika and her team start digging deeper, they discover a calculated serial killer - stalking their victims before choosing the right moment to strike.

Crimebusting duo DI Jackman and DS Evans are back, solving another crime that will make your skin crawl. Twenty years ago: a farmer and his wife are cut to pieces by a ruthless serial killer. Now: a woman is viciously stabbed to death in the upmarket kitchen of her beautiful house on the edge of the marshes. Then a man called Daniel Kinder walks into Saltern police station and confesses to the murder. But DI Rowan Jackman and DS Marie Evans of the Fenland Constabulary soon discover that there is a lot more to Daniel than meets the eye.