For Dr. Steven J. Fisher, love is no more than a chemical equation - and he's nearly solved it. A brilliant and utterly focused young biochemist who spends his time in an Oxford research lab studying orgasms, Fisher is on the brink of inventing a Viagra-like pill for women. It's a career high for any scientist, and the holy grail for the pharma company that funds Fisher's work. But, just weeks before the product is due to launch, a last-minute case study throws his perfect results into disarray. 'Miss G', a beautiful but orgasmically-challenged PhD arts student, isn't responding to any of the tests as Dr Fisher might expect. Strangely, the only external stimulus to provoke any reaction is the sound of Dr Fisher's own voice ... As the scientist and his subject bond over Bunsen burner-lit meals of molecular gastronomy, argue over Pink Floyd and Star Trek, and join in sessions of Swamps and Sorcerers, Dr Fisher's feelings start to crop up in the most unscientific and irregular ways. Now he's facing the most bewildering puzzle of his career: what's love got to do with it? Could the outdated research of the Romantic poets enlighten him at all? And why does the enigmatic 'Miss G' leave him feeling so decidedly vasodilated? With all this new data, he needs a new hypothesis - but what if there are some things that science can't explain?