As "Alone" enters its fourth season, the competition series shakes things up with a new twist: the contestants are dropped off in a remote location as pairs. Seven pairs of family members travel to a rugged region of British Columbia, where they are separated and dropped off miles apart from each other. Each player must navigate the wilderness to locate his or her partner. Once reunited, the loved ones have to create their own shelters and forage for their food while overcoming rough weather conditions and deadly predators. They have nothing more than the contents of their small backpacks and 10 tools split between them to help with their survival. They also have enough camera gear to record their experiences because -- as in the past -- there is no camera crew. The last duo standing at the end of the season is declared the winner and takes home the $500,000 grand prize.

　　本节目主要跟随西班牙边境巡逻局与海关执法局的官员们，看看他们如何打击偷渡者、军火走私犯与嚣张的毒枭集团。2017—2020年度分季播出。
　　由于IMDB上标注出品国为德国，语言为德语，未标注集数。国内视频平台为探索频道discovery出品，语言为英语，第1季11集

　　美国是汽车轮子上的国家，20世纪初期，汽车产业的先驱改变了美国人的出行方式。本片讲述福特、道奇、克莱斯勒等革命的企业家。