If his father was a judge instead of a detective, seventeen-year-old Mark Stewart would be spending the summer in jail. Instead his latest brush with juvenile court gets Mark "one last chance". Unfortunately, that chance exiles him into the custody of his great aunt Agatha. Mark's affection for his aunt takes a dive when she drags him to London for a "Ripperologist" convention. Stuck dressing in uncomfortable period clothing for a party, Mark never imagined one of his costume's accessories, combined with the power of a lightning strike would zap him back to 1888. Accepting he's in the past and not stuck in some nightmare, Mark decides his ticket home is to solve the crime. If there's no mystery, there's no conference to set the weirdness in motion. It shouldn't be too hard. His mom writes historical mysteries so he has some knowledge of the era. He knows when the murders will occur, and like it or not, he's learned a couple things from his dad. But Mark never counts on making himself look like a suspect or falling for Genie Trambley, a girl close to a potential ripper, a suspect neither the police or historians ever considered. Uncovering the truth of the murders puts her in danger and may trap Mark in the past forever.