One of my friends from the Richard III Society, Joan Szechtman, has written a novel about Richard III, which is due out shortly from Basset Books. It's called This Time, and it has a twist: instead of dying on Bosworth Field, Richard is brought by a team of Americans into present-day Portland, Oregon.
Normally, I don't go for time-travel, but this was an enjoyable read, not the least for Richard's various fish-out-of-water experiences as he copes with modern-day technology and modern-day mores, especially when he meets Sarah, a Jewish divorcee. Joan writes in an engaging style, with excellent dialogue, and her solution to the mystery of the Princes in the Tower, though very different from my own, is quite plausible. Richard is sympathetic without being too good to be true, and the modern-day characters are vivid and likable.
This Time, scheduled for release on June 1, is the first book in a three-book series. Ordering information (along with photographs and an assortment of Richard-related links), is on Joan's website.