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...