I thought this was quite good - a worthy addition to the series, if not, perhaps, the best of the bunch.
The setup seems a rather ho-hum affair: a shopkeeper suddenly snaps and shuts down his shop with two hostages held at gunpoint within. His price for their freedom: proof of his son's murder, not suicide, at a local Young Offenders' Institution. Tom Thorne to deliver.
At first, there appears to be little at stake, but the bodies do indeed begin to mount up, and the pacing is perfect.
What makes this especially stimulating reading, though, is its exposure of the casual corruption we imagine pervades the top of the British establishment, and what somebody else in a different context once called the banality of evil: it certainly is banal, but it is also, just as certainly, evil.
A novel seemed to start unpromisingly in fact gathers steam and powers towards a terrific climax.