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History remembers nineteenth century inventor Nikola Tesla as a mad scientist, and he did indulge in some very peculiar experiments, most notably the directed-energy weapon, or death-ray, as the press of the time gleefully dubbed it. But the truth is that his work was of groundbreaking importance: he developed the electrical alternating current and the AC motor, and much more. The average person probably has a better awareness of Samuel Clemens - who wrote Tom Sawyer and Huckleberry Finn under his pen name Mark Twain, and who was known as one of the foremost satirists of his day. But perhaps they don't know that Twain was fascinated by scientific inquiry, or that these two seemingly disparate men were great friends.

Mark Twain is a big hero of mine and I think Nikola Tesla is an absolutely fascinating character, uncomplimented by history in comparison to Edison, his great rival, and so I had high hopes of ''Tesla & Twain''. By and large, they were satisfied. It's a novel, so not everything is perfectly true, but the book is extremely well-researched and Elliott has certainly stuck to the spirit of the historical record. She gives a real flavour of these two larger-than-life, slightly eccentric men, but their oddities never detract from her portrayal of a pair of highly intelligent and original thinkers. The times in which they lived also come across well - the sky is the limit for these men, in a time of invention and progress, and Tesla's "patents on destructive terror" weren't quite the death rays they appear to us, more than a hundred years later.