The sixth book in the Tom Thorne series, from bestselling author Mark Billingham.

A MISSING BOY
Teenager Luke Mullen was last seen getting into a car with an older woman. No one can understand why he has disappeared. His father - a former police officer - knows all too well that the longer he is missing, the more likely he is to turn up dead.
A TERRIFYING VIDEO
Then Luke's parents receive an anonymous video. It shows their son, eyes wide with terror, as a man advances towards him holding a syringe.
A RACE AGAINST TIME
DI Tom Thorne recognises a psychopath when he sees one. And the scene on the tape chills him to the bone - he knows that a child's life hangs in the balance, and that every minute counts...
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The outstanding new Tom Thorne thriller, THEIR LITTLE SECRET, is out now!