Love and Other Historical Accidents

Hermione Granger and Draco Malfoy never intended to blow up their life's work, but that's what they've gone and done. Now they're trapped 200 years in the past, with a broken Time Turner, a missing snuff box, a handful of overly-eligible daughters, and a House-elf with a grudge. It will require the combined power of their intellects to get them home. Too bad they despise each other