The Frog Theory - Fiona Mordaunt

Clea's in trouble, and the only thing that will save her life is a leap of faith. But leaping is risky, when you have no place to land. They come from different worlds, yet when fate draws them together, it seems that they hold the keys to each other's destinies. Landing after the jump turns out to be easy. It's the stuff they had planned to leave behind that causes the problems - unrequited love, obsession - and a big, fat secret. This short, fast paced novel will have you hooked from beginning to end.