Ellery Queen's "The Adventure of the Murdered Ship"

Can you solve the mystery of the Murdered Ship? Three clues are revealed before a brief intermission in this half hour classic performed by the Ledger Actors Workshop (The LAW). Can you match wits with the great Ellery Queen as he strives to solve how Axis forces were able to sink an American ship under tight security? When the solution is revealed you may find yourself slapping your forehead and saying, "Of course! How did I miss that?"