This impressive novel is the first of a trilogy set in the criminal underworld of Glasgow and gives a very convincing insight into the world of contract killers, devious drug barons, more or less innocent hangers on and more or less honest and competent police officers. Calum MacLean is a killer by profession. At twenty-nine he is coolly professional, prefers to work as a freelance but has been co-opted into the organisation of Jamieson and Young to dispose of a middle-aged minor drug dealer, Lewis Winter, who possibly is getting ideas above his station and may be attracting one of their rivals. This Calum does with the minimum fuss and it is not his fault that things rapidly turn nasty, or nastier. Lewis Winter was a drunk, out of his depth, living with the previous girl friend of another high-flying criminal, who lives by her wits but is not smart enough to tell the highly unpleasant detective Fisher what actually happened on the night of the killing. With nobody trusting anybody else things naturally escalate and Calum finds himself in deep and unexpected trouble. I thoroughly enjoyed this story. How to go about being a hit-man was explained very clearly and without emotion and Calum is a likeable character in spite of his profession. I have to say I am rarely comfortable with present tense narrative and this was no exception, and also that points are laboured and repeated to the extent of irritating me, but all told it was a fascinating look into a nest of vipers and I am looking forward to the next instalment.