The dead man's boot

When leatherback turtles start washing up on Nova Scotia's South Shore, thirteen-year-old Will is alarmed. The deaths seem to be the result of loud underwater explosions Will has been hearing - but who and what are causing these explosions? And could there be a connection to the local ship-wreckers who endanger lives in their reckless efforts to plunder disabled boats? Theories abound, but no one can solve the problem, not even his cousin Harley,...