Biff’s strangest case: after all, everyone around is sure that this time he, aged, retired and engaged in private investigation, suffered a fiasco - he could not prove the innocence of millionaire Stuart Ferrers, accused of murdering a family doctor, and then executed for this crime by a court verdict. But only the retired sergeant himself and his best friend Townsend know what reasons prompted Biff to remain silent about the fact that he actually managed to solve the case...