This was literally the biggest WTF back story this show had.
The Priscilla nuclear test in Nevada, June 25, 1957. It was part of Operation Plumbbob.
ANABELLE, THE POSSESSED DOLL
"Bought in an antique shop in 1970, a woman gave a raggedy doll to her daughter, Donna, who was in nursing school. Donna and roommate Angie kept coming home to find the doll in different positions and different locations. Then the doll began living them notes reading "Help." And then they found the doll with blood on it. A psychic told them the doll was possessed by the spirit of a girl named Annabelle, who had died at the location where their apartment complex has been built. But the girls’ friend Lou thought there was something more sinister about Annabelle, and told his friends to get rid of it. That’s when Annabelle went to visit Lou, levitated up his body and strangled him until he passed out. The next night, the roommates heard what sounded like someone in the next room; Lou investigated; the girls heard him scream and ran in to find Lou with two massive claw marks on his chest, although no one else was in the room… except Annabelle. The girls called Ed and Lorraine Warren, the folks who investigated the Amityville house — who decided the doll was actually a conduit to hell that a demon was using. Two exorcisms didn’t work, and now the doll resides behind a glass cause in the Warrens’ occult museum, where it still moves."