Booby Trap

A prequel to the James Bond series (played for laughs as Wilfred Burns gallumphing score keeps reminding us) in which a boffin absent-mindedly leaves the exploding fountain pen he's currently working on in a taxi and spends the rest of the film trying to recover it in a cynically observed fifties London rife with dope peddlers, mercenary blondes, 'blind' beggars that can see and sundry other lowlifes.