Colpo Maestro al Servizio di Sua Maestà Britannica (1967, ITA/SPA) C-98m. SCOPE ** D: Michele Lupo. Starring Richard Harrison, Adolfo Celi, Margaret Lee, Gérard Tichy, Andrea Bosic, George Eastman, Roberto Dell'acqua. Typical heist film of that era: Spaghetti western actor Harrison is persuaded by Celi to take part in a diamond robbery. The actor is supposed to stand in for a look-a-like employee of the Diamond company. But this is just the beginning of a serpentine story. Ambitious project lacks fire to make this work, characters are meaningless. Film's watchable, though, thanks to some interesting twists. English title: MASTER STROKE.