A mysterious pinging noise emanates from the seafloor, scaring wildlife and worrying locals. What is it, what's causing it, and can it even be proven to exist?

S1 E25: The Grand Prairie Slayings

Hello and welcome to Maple Moose Mysteries! Each week we take a look at a different unsolved mystery or crime that takes place in Canada. Whether it be a unexplained event or a notorious case, we will examine the story, the theories that surround it, and why it remains unsolved to this day. Join me as we explore a more obscure side of Canadian history and help unleash your inner detective!