Catch a cheater. They the cheat, but they cannot hide. From facebook to twitter to text. Why hidden Digital Footprints may mean the end of infidelity as we know it. Diving for gold. An underwater Treasure Hunt with the fortune seekers braving alaskas icy waters, trying to strike it rich in a new american gold rush. Hot pants . We try out the latest celebrity fitness craze. We try out the high octane workout gear designed to help you get more bang for your burn. From new york city, this is nightline with cynthia mcfadden. Good evening. Thanks for joining us. Tonight, cheaters beware. The trail of clues that you may not realize youre leaving could be coming back to haunt you, from tweets to emails and facebook messages, the digital age has blown open the door to new and cutting edge ways to catch cheaters red handed, including hidden electronic clues that maybe even the delete button cant destroy. Heres abcs nick watt. Reporter technology, its infidelitys best friend. Texts, tweets. Some