British secret agent John Bentall applies for the job of rocket scientist, a post from which six people have mysteriously disappeared. With fellow agent Marie Hopeson posing as his wife, they fly out to Australia. Kidnapped by mercenaries, they wind up on an island where a group of criminals, led by the sinister LeClerc, has taken the place of a British archaeological expedition. They are secretly tunnelling into a nearby naval establishment where the 'Dark Crusader' rockets are kept. LeClerc is working for Communist Asia. Only Bentall can stop him from triggering a nuclear war...
Irritated by the popularity of Ian Fleming's 'James Bond', Mclean decided to try and do better. This was one of two books he published under the nom-de-plume 'Ian Stuart', the other being 'The Satan Bug'. Its an exciting, enjoyable yarn in the Maclean tradition, even though Bentall never presents Bond with any competition. As he openly admits, he's rather a dull bloke. The heroine is duller still, though there's a reason for this. The epilogue anticipates the final scene of 'Where Eagles Dare' in that it throws new light on everything that went before.
Maclean's later pseudo-Bonds included 'When Eight Bells Toll', 'Puppet On A Chain' and 'Ice Station Zebra'. All were filmed. That 'The Dark Crusader' got overlooked is strange.