Ex. Detective-Inspector John Raven is a sucker for lost causes (Raven's Longest Night, etc.) and finds yet another during a London trial in which he's one of the jurors. Young German au pair Helga Neumann and handsome, plausible con-artist Piers Pelham are being tried for attempting to bring a drug shipment into Britain by way of Amsterdam (via a car Helga was driving). With inexperienced Legal Aid counsel, Helga refuses to say a word in her own defense--and is found guilty by the jury, only Raven dissenting. Meanwhile, Pelham, with a bevy of pricey lawyers, gets off scot-free, placing all the blame on his one-time lover. When Helga commits suicide after the verdict, Raven vows to clear her name. He soon discovers some nasty Mideast types manipulating Pelham, who, under various pressures, teams up with Raven in a cross-double-cross--which leads to three ruthless killings and a trip to Germany that ends with vindication for Raven's sense of justice. The plot races along at breakneck speed, and Raven is less testy than in his last couple of outings. All in all, then: medium-plus MacKenzie.