A Utah man goes missing while hiking through China. Authorities claim he drowned, but years later, information emerges claiming he is alive and was kidnapped by North Korea. 

Sources: http://www.ldsdaily.com/world/everything-you-need-to-know-about-david-sneddon-his-disappearance-and-the-new-call-to-find-him/

http://www.helpfinddavid.com/wp-content/uploads/2013/06/North-Koreas-Kidnappers-and-the-Fate-of-David-Sneddon-WSJ1.pdf

https://www.outsideonline.com/1923586/did-north-korea-kidnap-american-hiker