When ex-agent Harry Palmer recieves a mysterious request to deliver a flask to Finland in return for a fee, Col. Ross forcibly re-employs him with British Intelligence. Palmer is ordered to proceed to Finland with the flask (which contains deadly nerve gas), in an attempt to infiltrate the organisation of Texan oil billionaire Gen. Midwinter, who is believed to be behind an anti-Soviet plot of some kind.

The third and final of the Harry Palmer films (if you don’t count the two woeful straight to cable efforts of the mid-nineties) is generally considered to be the weakest. The strength of both ‘The Ipcress File’ and ‘Funeral In Berlin’ was that they were the complete antithesis of the Bond films, portraying the spying game as mundane, shadowy and unglamorous. However, with ‘Billion Dollar Brain’ maverick director Ken Russell presents the audience with an outlandish plot and large futuristic sets, which seem at odds with the style of its predecessors. The result is that the film appears to be aping Bond, and as such the character of Palmer is less effective.

Despite these shortcomings there are pleasures to be had. Michael Caine once again displays wit and charm as Palmer, Guy Doleman is his usual droll self as Ross and Oskar Homolka makes a very welcome return as Col. Stok. Ed Begley gives his all as the lunatic Midwinter, Karl Malden provides reliable support as an old aquaintence of Palmer, and the tragic Francois Dorleac lends an exotic mystery to her character. The snowbound Finnish locations are beautifully filmed and the production design by Bond man Syd Cain is very stylish.

Ultimately the film is let down by rather wild and undisciplined direction and a cartoonish finale. It’s a shame that ‘Billion Dollar Brain’ strayed so far from the template of the previous films, but its by no means all bad, and can be reasonably entertaining if you’re in the right mood.