My Hero - Tom Holt

Writing novels? Piece of cake, surely … or so Jane thinks.
Until hers start writing back. At which point, she really should stop. Better still, change her name and flee the country. The one thing she should not do is go into the book herself. After all, that’s what heroes are for. Unfortunatly, the world of fiction is a far more complicated place than she ever imagined. And she’s about to land her hero right in it.