These People Mysteriously Vanished Without a Trace

Photo Courtesy: National Portrait Gallery/Smithsonian Institution

People who vanish come from all walks of life. While some are wealthy and famous, others lead ordinary lives. What's extraordinary is how each of the following people seemingly disappeared without a trace.

Family and friends left behind can only speculate as to their fate. Did they decide to leave on their own? Did they have accidents, or were they murdered? Read on to learn about some of the most intriguing missing persons cases.