Exiles in Time

Two years in Afghanistan; four years working for MI5, the British security service; and the death of both of his parents from cancer. At the age of 34, Callum thought he'd experienced the worst that life could throw at him. That was until his boss ordered him to open a buried file on his desk and to take it seriously. His new assignment: to detain and question a pregnant woman and her ailing husband - and, if need be, to stop them from returning to medieval Wales.

Until today Callum believed in his job and always followed orders. Until today he thought time travel wasn't real....