Is it possible the Canadian government would send the Confederates gold to fight the Union? Well again Murdoch is pressed into service and this time invents "Sonar" to help discover a ship that was sunk in American waters. While his latest invention is fun; it has nothing to really do with the resolution of the plot. But a murder did take place in the 1860's, and Murdoch rests at nothing to discover who did it. And there really was a million dollars in missing gold, and with a nod to "The Good, The Bad, and The Ugly," Murdoch uncovers the gold, receives praise from the Canadian Prime Minister, and bests his sometime nemesis Canadian secret agent Terrance Meyers. A fun episode that may be more on the frivolous side but that's what helps make Murdoch Mysteries fun to watch.