Tempus Guardians

Kate Oliver knows she is different, but doesn't know why, until a chance meeting in an old bookshop in Edinburgh shows her. Kate learns she is a Tempus Guardian. She was born to protect time and history from people who would change it. Kate learns some vital new skills before being sent back to Oxford in the 1100s. Why does she need to help a pregnant queen? And will she find out answers to her father's disappearance?