In the fall of 1999, a 22-year-old woman was discovered naked and bleeding on the streets of a small New Mexico town south of Albuquerque. She was chained to a padlocked metal collar. The tale she told authorities - of being beaten, raped, and tortured with electric shock - was unthinkable. Until she led them to 59-year-old David Ray Parker, his 39-year-old fiancee Cindy Hendy, and the lakeside trailer they called their "toy box." What the FBI uncovered was unprecedented in the annals of serial crime: restraining devices, elaborate implements of torture, books on human anatomy, medical equipment, scalpels, and a gynecologist's examination table. But these horrors were only part of the shocking story that would unfold in a stunning trial...