Article Photos: Trying to unlock secrets of dead serial killer 11/14

ADVANCE FOR SUNDAY, JAN. 27 - In this April 12, 2012 photo, state police investigators sift through dirt and debris at a dig site off Vermont 15 near Lang Farm in Essex, Vt., in what Essex Police Chief Brad LaRose described as part of the ongoing investigation into the disappearance of William and Lorraine Currier, who went missing June 2011. After confessing to killing a 18-year old woman in Alaska, Israel Keyes is suspected of killing Bill and Lorraine Currier. Keyes was found dead in his cell on Dec. 2, 2012.   Investigators have used Keyes' financial and travel records to piece together a timeline of his whereabouts from Oct. 4, 2004, to March 13, 2012. He traveled throughout the United States and made short trips into Canada and Mexico. (AP Photo/The Burlington Free Press, Ryan Mercer) MAGS OUT; MANDATORY CREDIT; NO SALES; ONLINE OUT