In for the Kill — Ed James

A university student is found strangled to death in her bedroom, but when the embattled DI Simon Fenchurch is called in to investigate, the case strikes dangerously close to home.

On the surface, the victim was a popular, high-performing student. But as secret grudges against her emerge, so too does evidence that she was living a double life, working on explicit webcam sites for a seedy London ganglord. Everyone Fenchurch talks to knows a lot more than they're willing to tell, and before long he's making new enemies of his own -- threatening to push him and his family past breaking point.

With too many suspects and not enough facts, Fenchurch knows his new superiors are just waiting for him to fail -- they want him off the case, and off the force for good. His family is in more danger than ever before. So how deep is he willing to dig in order to unearth the truth?