Murdoch, Julia and Brackenreid are aboard the luxury steamer Keewatin on its maiden voyage from Toronto to Rochester, N.Y. as owner Clarence MacFarlane reported a telegram hinting at a bomb. His daughter Amy was to wed socialite Owen Mathers aboard, but is reported overboard, actually missing, staged with her socially unacceptable lover, Indian crewman Johnny, who pretends not to have called it but actually arranged a maids disguise and hideout. This takes backseat as a telegram warning about two bombs to sink the ship proves true, only after Murdoch disarms one the other goes off an hour early. Higgings doesn't share Crbtaree's enthusiasm about telegrams enabling them to help with research from Toronto. Team Murdoch and the MacFarlane refuse to be evacuated until the twin case is solved at great peril.
—KGF Vissers