This was the first Higson novel I have read, and I must say I was pleasantly surprised.
Tom is a creature of habit, insular and increasingly frustrated by the behaviour of others. He can't interact in what he perceives to be a "normal" manner, and consequently his frustrations deepen into anger. When the husband of his much-loved but slightly distanced sister is murdered by an intruder in the family kitchen, the killer leaves behind a clue to his identity - of which i won't speak as it may spoil the plot. Tom takes it upon himself to withhold this information from the police, and decides to track him down single handedly.
Tom's motivation for this action is not entirely clear, and his descent into the murkier depths of his past happens rather quickly for a man with such tightly-defined morals. However, Higson is adept at instilling that creepy, uncomfortable feeling into the reader, and for the most part his narrative is believable. I finished this bok in the early hours of the morning, and found myself tiptoeing downstairs to check that the back door was locked. (lucky I did, because it wasn't, which only made me feel more creepy).
I will certainly be reading more of Higson's novels, and I would definitely recommend them to lovers of contemporary British fiction.