Campier, less successful sequel to DEADLIER THAN THE MALE (1967) – basically the only department where this surpasses the original is in the title track! Incidentally, it makes no attempt to be a direct continuation of the earlier film – with, for instance, the figures of the boss and his secretary nowhere to be seen: in fact, here Bulldog Drummond (a returning but not-as-effective Richard Johnson) seems to have gone up in the world as he now has a female assistant of his own and, when we first see him, he is sun-bathing (and ditching a host of Hungarian girls!?) in the company of a debuting Sydne Rome.

The latter's amiably klutzy character recalls those played by Stella Stevens and Sharon Tate in the first and fourth entries in the comparable and contemporaneous "Matt Helm" series with Dean Martin. Indeed, the whole film seems to be closer to the spoofy spirit of that franchise (attributable perhaps to the fact that Hammer's Jimmy Sangster did not collaborate to the script this time around) – which, unlike the Drummond duo, had copied the gadget-craze that were a fixture of the prototypical James Bond extravaganzas.

More illogically, not only does the supposedly-dead arch-criminal Carl Peterson turn up again here (albeit played by a different, younger actor i.e. James Villiers) but the two do not even recognize one another immediately (besides, Peterson had merely dual identities in the first film whereas he has three here and is a master of disguise besides!). That said, it does attempt to duplicate elements that had worked first time out, namely Peterson's two principal hench-girls working as a team, except that Daliah Lavi (who had appeared in the first and best Matt Helm adventure THE SILENCERS {1966}) and Beba Loncar are not nearly as intriguing as Elke Sommer and Sylva Koscina and, what is more, there is little chemistry between them!

Perhaps realizing this, the script singled out not one but two other girls to share the spotlight with them (by the way, most of Peterson's girls are actually robots – which raises uncomfortable parallels to Mario Bava's dispiriting DR. GOLDFOOT AND THE GIRL BOMB {1966]): one is Yutte Stensgard (soon to take the leading role in Hammer's maligned – and Sangster-directed – LUST FOR A VAMPIRE {1971}) and Vanessa Howard (who more or less duplicates the Suzanna Leigh role from the first film, in that she improbably hitches up with the hero at the finale)…with Rome (who proves no nitwit but rather a triple agent!) going all of a sudden for Drummond's comic-relief partner (describing his car as "positively psychedelic" and eliciting a "Cool, baby!" response from Drummond at a party!). By the way, Robert Morley also puts in an irrelevant cameo as a flamboyant cooking instructing named "Miss Mary" (complete with golden earring)!

The 'McGuffin' in this case is a supersonic plane, whose infra-sound is capable of killing but also accelerates the movement of, say, a speed-boat during a race – big deal! Drummond, in fact, is made to fly one but subsequently has to bail out (after an attack by another aircraft!) – only to find the rip-cord of his parachute had also been pulled beforehand! As for the climax, in spite of all the ongoing action at the villain's fortress (which again includes a couple of non-entities for male underlings), Peterson's come-uppance is down to that infallible – and completely baffling – in-built self-destructing switch in his unwieldy controlling device!