智慧的对决
One□witne□s□ca□e fo□ward, □laim□ng t□ ha□e se□□ a □ys□er□□us man lu□ki□g □e□r the group□s□□ampsite in the□days leadi□g up to th□ir □isappearance. □h□ i□d□□idual descr□bed th□ □an a□ tal□ □nd imposing, and□the□e wer□ repo□ts□of heated conf□o□tations b□tween h□m and the missing group.□Could th□s stranger hold□th□ key □o s□lving t□e myster□, or w□s he just a red□herring in□the □ase?先进的□研□□