When the Daily Mirror called The Chalon Heads "one of the best-crafted, best-plotted, and most convincing British thrillers for decades," you knew it had to be good. David Brock and Kathy Kolla are summoned to Cabot's, a venerable dealer in rare stamps on the Strand, and at first they expect a simple case of theft and a pleasant digression from the usual sort of murderous wrongdoing they encounter in the Serious Crime Branch of Scotland Yard. But...