Assignment the Girl in the Gondola

Durell could recognize that special knife thrust as the favorite technique of Helmuth Dinov, commander of Moscow's deadly Blue Squad Four, elite professional assasins who could kill a man in any of a hundred brutal ways.
Could Lisette Pollini tell him what Dinov was after? Or was she luring Durell to his death among the ancient monuments of Venice.
**From Back Cover Blurb**