Lucas Landry receives an email from a teenager, Mikayla Carson, who thinks her legal guardian and great-grandmother, Elisabeth Hoffman, is related to his great-grandfather, Franz Nagel. She's not certain, because Elisabeth suffers from dementia. Mikayla wants Lucas to help her find out more about her family's past. As a genealogist, Lucas is eager to untangle the family roots. He travels to Arizona to meet Mikayla, her younger brother, and...