Venetian mysteries

When a well-known British TV historian, Marmaduke Godolphin, is found murdered in the canals of Venice during carnival, stabbed by a stiletto blade, the Venetian police are eager to have the case solved and cleared up within a day -- murder is bad for tourism! The police recruit the help of retired archivist, Arnold Clover. Godolphin had hired his services on arriving in Venice to help sort through some historical papers of note. These dusty documents...