Dale Williams (Jack of Hearts, Colorado)

In the spring of 1999, 42-year-old Dale Williams seemed to vanish into thin air inspiring an investigation that would span four law enforcement agencies and more than 20 years. To this day, there’s been no sign of the devoted father and husband, who left behind a legacy of kindness in his tight-knit small town in Colorado, and who investigators are determined to track down as new theories emerge from decades of rumors and dead ends.