A sadistic killer with a grudge against Rosie Gilmour is on the loose in Glasgow.Thomas Boag escaped from his first court appearance facing charges on a brutal murder.He's suspected in the disappearances of two other people.Now he's out for revenge. Rosie tries to distract herself with a new story: refugees trafficked into Glasgow and used as modern-day slaves - or worse.But this investigation soon leads her into dangerous territory as it takes her up against some of Glasgow's nastiest characters, and all the while, somewhere out there, Boag is laying his trap... 'Another searingly-paced and all-too-believable look at the darker side of life from a quite brilliant writer' Crime Review