Pangbourne Village is an estate for the upper middle class, protected by security fences and discreet guards.

[1] Its ten families are wealthy, respectable, 40-something couples with adolescent children on whom they lavish everything money can buy.

[1] Dr Richard Greville of Scotland Yard puzzles over the scanty evidence: it gives no leads to the identity of the murderers and kidnappers.

Their controlled upbringing has left them no way to establish their own identities except by rebelling into criminal savagery.

However, in a tradition of obtuse policemen going back to Inspector Lestrade in the Sherlock Holmes stories, Greville resists drawing this obvious conclusion - until the children strike again.