It's Ur-Buchan. A bunch of stalwart chaps, including, refreshingly, a pugilistic Labour MP - go up against an international criminal organisation headed by a recluse in tinted specs. There's a great cat and mouse chase across central London. You think you're safe walking through Green Park in broad daylight? Think again.
Buchan is snappy and economical, a stylist- capable of doing a great deal with very few words. Conan Doyle lies behind him, Hammett and Fleming are waiting up ahead. This is a very short book- barely more than a novella. And lots of fun.