Gareth's Gambit — Jean Hart Stewart

It is 1919. Gareth Townsend, Viscount Hunter, admits two women and a child to his manor house, even though he senses they bring trouble with them. His mage's power demands he helps others with his magical skills. Even as Morgana scorns his abilities Gareth tries to help her sister find her malicious husband Frank. But Gareth's gifts plus those of his twin sister cannot turn Amy from her self-destructive path. Morgana is left with the child Katie, whom she adores, and tries to protect her from her father. When Frank turns his lecherous eyes on Morgana, Gareth realizes he must stop him with any means possible, including all his magic. In addition, he suspects Frank might turn out to be the spy Gareth has been seeking. His country, his beautiful Morgana, and the adorable child are all dependent on his skill as a descendant of Merlin.