The fourth unputdownable book in the DS Mark Heckenburg series. A killer thriller for fans of Stuart MacBride and Luther, from the #1 ebook bestseller Paul Finch. His worst nightmare is back…As a brutal winter takes hold of the Lake District, a prolific serial killer stalks the fells. ‘The Stranger' has returned and for DS Mark ‘Heck' Heckenburg, the signs are all too familiar.

As a female cop walking the mean streets of Manchester, life can be tough for PC Lucy Clayburn. But when one of the North West's toughest gangsters is your father, things can be particularly difficult. When Lucy's patch is gripped by a spate of murder-robberies, the police are quick to action. Yet when it transpires that the targets are Manchester's criminal underworld, attitudes change.

How do you find the missing when there’s no trail to follow? DC Lucy Clayburn is having a tough time of it. Not only is her estranged father one of the North West’s toughest gangsters, but she is in the midst of one of the biggest police operations of her life.

Dark, gritty and always edge-of-your-seat: the number one best seller is back with a standout new heroine.... Unknown, alone, and fearing for your life. As PC Lucy Clayburn is about to find out, going undercover is the most dangerous work there is. But on the trail of a prolific female serial killer, there's no other option - and these murders are as brutal as they come. Lucy must step into the line of fire - a stranger in a criminal underworld that butchers anyone who crosses the line.

When a woman's body is discovered in a cathedral and hours later a young man is found hanging from a tree outside his home, Detective Lottie Parker is called in to lead the investigation. Both bodies have the same distinctive tattoo clumsily inscribed on their legs. It's clear the pair are connected, but how? The trail leads Lottie to St Angela's, a former children's home, with a dark connection to her own family history. Suddenly the case just got personal.