“Lauste Film Clip”: Did a HISTORY DETECTIVES viewer find a clip of the first talking picture? “Baker’s Gold”: What’s the story behind Gold Rush sketches of five and eight-pound gold nuggets? “Transatlantic Cable”: Did a beachcomber find a section of the first transatlantic cable?

Monday, July 5, 2010, 9:00-10:00 p.m. ET

A collector thinks he may have a clip of the first talking picture. HISTORY DETECTIVES host Gwen Wright tracks down the origin of the "Lauste Film Clip." Wes Cowan explores Gold Rush territory in search of the facts behind "Baker's Gold" - sketches of five- and eight-pound gold nuggets. Then, a Cape Cod beachcomber stumbles across a rope of twisted cables. Did he find a section of the first "Transatlantic Cable"? Tukufu Zuberi is on the case.