1:30p Based on his just-released book, “Dead Air: The Night Orson Welles Terrified America” William Hazelgrove uses the actual broadcast and many media stories to detail the great Halloween hoax of 1938. That’s when 23-year- old Orson Welles broadcast to the world that Martians had landed in New Jersey and were exterminating humans with heat ray guns and poisonous gas. The coast-to-coast terror takes viewers on a wild ride through America as people head for the hills, contemplate suicide, get into accidents, run out of restaurants, theaters, and churches believing the war had ended.