Abstract
Since discovering the Canadian Flyer, a magical time-traveling sled, in Emily’s attic, Matt and Emily have outrun dinosaurs in the Alberta badlands, evaded slave catchers on the Underground Railroad, and seen the last spike driven into the Canadian Pacific Railway. In Halifax Explodes!, Emily and Matt land on Citadel Hill in Halifax, Nova Scotia — just as the Mont Blanc, a ship laden with explosives, explodes in the harbor!