Likeable YA time travel story, albeit one that borrows very heavily from Octavia Butler's far superior Kindred. Sophie, looking for an adventure, goes through a maze and ends up 100 years back in time, mistaken for a slave by her own relations. As is (realistically) always the case in these stories, she finds her situation both educational and unpleasant. The historical portions of the story are well-told and seem to be well-researched, as far as I can tell from my own admittedly ignorant perspective. Far less convincing is the 1960 frame story of a difficult mother and absent father, and in both 1860 and 1960 Sophie's relationship with her apparent and actual fathers is so very minimalistic it almost becomes a plot hole in itself.