When Isa and Violet, Strachan's daughters, hire Lennox to find out who has been sending them large sums of cash each year, on the anniversary of Strachan's most successful robbery, his instincts tell him that this job spells trouble and will take him back into the dark world of the Three Kings - the crime bosses who run the city.
He takes the job nevertheless. And soon learns that ignoring his instincts might just cost him his life.
This is the third fantastic thriller featuring shady investigator Lennox as he stalks Glasgow's tough streets. The Deep Dark Sleep is gritty, fast-paced, and totally absorbing.