Detectives link the 1982 murders of two women near Breckenridge, Colo., through matching orange socks, but the case goes cold for decades until investigators turn to genealogy for clues.
Diana Duve was last seen alive leaving a bar in Vero Beach, Fla., with her on-again, off-again boyfriend, Mike Jones; her mother knew something was wrong when Diana didn't call her, something she did every day.