Taut, sharp, fast, accurate and pulled by terrific acting and directing. Stan Baker has here a role very close to the one he'll have four years later in Peter Yates' ROBBERY. But the problem is,, as Lenny Maltin said in his dictionnary, the too much British accents, I could not understand each sentence entirely. I rarely had noticed this in any British film. But who cares, any one can follow this superb cime thriller where there is no good vs evil scheme. I highly recommend it. Unfortunately never shown in France since its treater relase in 1963, before I was even born. Abrupt ending.