Pinterest Facebook Twitter Email Duquesne Spy Ring 02:55 Don examines a short-wave radio that posed a direct threat to national security. From: Don Wildman, Mysteries at the Museum and Love Canal, Spy Ring, Survival in the Colonies Similar Topics: History Travel's Best Related Videos America's First Spy Ring 04:24 A Secret Under the Greenbrier 02:05 Rocks of Alien Origin 02:26 Tainted Sausages 02:36 Who's the Boston Strangler? 03:29 Female Paul Revere 03:14 Watergate Scandal Evidence 04:49 A World War I Bomb Plot 02:05 More Videos Flight for Life 02:33 The Disappearance of Flight 19 03:03 Sam Discovers Old Athens 02:23 Mystery of the Black Dahlia 02:39 Death By Scrambled Eggs 02:30 The Ames Monument 03:47 Unusual Murder Defense 02:21 An Antidote for Poison 03:12 The World's Largest Cathedral 03:53 First Female Serial Killer 03:50 Don Explains: Teddy Roosevelt 00:37 Hijacked by Somali Pirates 03:44 Connecticut Haunting 02:28 Edgar Allan Poe's Death 01:55 Love Canal 03:47 A Titanic Love Story 03:32 We Recommend Monumental Mysteries: US Spy Ring Pictures 9 Photos