A little after 8 a.m. on July 20, 2001, a couple arriving for an appointment opened an unlocked front door at an office in the Florida panhandle town of Fort Walton Beach and discovered a woman lying on the floor, dead. Her name was Lori Kaye Klausutis and she was just 28. The police said they found no signs of foul play. The medical examiner concluded her lonely death was an accident. She had fainted, the result of a heart condition, and hit her head on a desk, he said. Now, nearly 20 years later, Klausutis's death has captured...