Monsters can be found lurking behind any innocent smile and on any street corner in America. Never-before-seen-video footage stares straight into the eyes of these killers who hide in plain sight. 　　S10 E1 Friends Outside of Work 　　S10 E2 Day Three After Murder 　　S10 E3 The Hidden Room 　　S10 E4 Lake Placid 　　S10 E5 Enjoy the Moment 　　S10 E6 I Took Her Somewhere Peaceful 　　S10 E7 He Wasn’t Su... (展開(kāi)全部)