Flesh House by Stuart MacBride

Ken Wiseman, aka the Flesher -- the notorious serial killer who butchered people all over the UK, is out of prison, his onviction overturned on appeal. But when a container full of joints of human meat turns up at Aberdeen Harbour, it kicks off the largest man hunt in Aberdeen's history. When members of the team that put Wiseman away in 1990 start going missing, Detective Sergeant Logan McRae knows that things aren't as straightforward as everyone thinks. Twenty years of secrets and lies are being dragged into the light. And the only thing that's certain is Aberdeen will never be the same again.