Yet Another Death in Venice

Along the canals of Venice, Bognor investigates a mogul's medieval murder
Flush with cash from the success of his latest insipid blockbuster, aspiring film mogul Irving Silverburger takes to Venice to soak himself in luxury. Instead, he is quickly soaked in blood. Cruising down the canal in a vaporetto, Silverburger is shot with a crossbow, killed by a Harlequin who disappears into the masquerade of Carnival.
Unmasking the disguised assassin falls to Simon Bognor, a British Board of Trade detective whose natural sloth did not prevent him from stumbling backward into knighthood--an honor that fits just as poorly as his ill-tailored clothes. If he ever had a prime, he is long past it now, but Bognor must rally once more to penetrate the mysteries of an ancient city at festival time, when the killers are not the only ones in disguise.