The Hanlons are settling in to Copper Mill, but already Kate has stumbled onto another mystery. A condolence call to a grieving widow, Patricia Harris, uncovers a long-buried secret: When she was seventeen, Patricia gave birth to twins; one was given up for adoption. Now the daughter she kept is in desperate need of a bone marrow transplant. With no matching donors, her only real hope is to find her twin sister. With a life on the line, can Kate track down her missing twin before it’s too late?