For Rod Serling, TV was the perfect landscape to battle bigotry and corporate censorship. But was the nation ready for it?In the late 1950s, Rod Serling found himself sitting in a London airport tired and ready to go home. As he waited to board his flight, he spotted something eerie. Across the room stood his doppelgänger: a man who looked to be his same height, sporting the same coat and carrying the exact same cowhide briefcase. It blew his mind. As the award-winning TV writer tried to catch a g...