Yosemite | Evil in Eden - The unimaginable story of two brothers – one a hero – the other, a monster. Shocking interviews and details of a cold-blooded serial killer in Yosemite National Park. Our 20/20 'Evil in Eden' encore airs Friday, Aug. 28th at 9/8c on ABC. Stream later on Disney+ and Hulu. #TrueCrime #Investigation #Yosemite #Stayner