Murdoch and Inspector Brackenreid are aboard the SS Keewatin after the owner, Clarence MacFarlane, receives what he believes is a threat. The Keewatin is about to depart from Toronto on its maiden voyage destined for Rochester , N.Y. and Murdoch thinks they should stay on board, especially after he sees that Julia is one of the invited guests . Their presence proves useful after MacFarlane's daughter Amy, who is engaged to her father's chief financial officer Owen Mathers, falls overboard and is nowhere to be found . As Murdoch investigates he finds there is a real threat against the Keewatin and the true facts behind Amy's disappearance.