Rick and Dan are one and the same person, but living different lives through their dreams. Dan exists several hundred years in the future on a newly-colonised planet, with his wife Vanessa. Rick lives here on Earth, now, where his existence is far duller and his wife Cath considerably less likable. So when Rick dreams, he become Dan - and this has been augmented by Rick's participation in the trial of a new drug for insomnia.
I found it hard to put this book down. Richard Dee writes in a straightforward and honest style which sweeps up the reader into this most original of tales, and won't let go!
Four and a half stars, because at times I felt the story drifted a little.
Would I read it again? Yes, and I'll probably read the sequel which is advertised at the end.