He was suppose to protect his heart, not lose his own... Callen has always had a stoke of luck with everything. The ladies to his missions, he succeeded in them all. But all Callens luck strikes out, Literally... When a daring mission cost his life, his place in heaven isn't guaranteed. To earn his place in heaven, he must go back in time to help Elizabeth with a mission of her own. There was only one rule. He mustn't succumb to physical temptation But no mission could have prepared Callen for his role as guardian angel to Elizabeth. The most stubborn, impetuous and beautiful woman he's ever met. Can Callen and Elizabeth find the answers they seek, without succumbing to the desire that flares between them and dangers that lurk around every corner.