Gayle Callen's "A Knight's Vow" is truly a fabulous read that you will not want to put down or end. Ms. Callen takes the classic battle of the sexes to new heights of humor, excitement and tenderness. This book is brilliantly written with characters so memorable they quite jump off the page and grab your heart. It's a must read for fans of famous boy vs. girl pairings like Hepburn & Tracy or Bruce Willis & Cybil Shepard in Moonlighting. Ms. Callen draws the reader into James and Isabel's world easily. The sparkling dialogue that was full of double entendre's and all out fun kept me entranced. The journey that James and Isabel take from being physically attracted enemies to deeply in love soul mates is very satisfying and will no doubt be considered a classic! What is most captivating is how Ms. Callen lets the reader truly "get into" her characters' heads. Behind the humorous humiliations, the serious competitions between boy and girl, are real emotions of heartache, failure and inadequacy. Isabel and James' triumph over their very human failings; they come to respect and cherish each other for who they truly are, not who they appear to be. This is a must read for any romance fan, not just medievals. I absolutely recommend it as a top-notch novel!