Caitlin Nichols put her triplet daughters — Haze, Millie and Presley — down for a nap. Awhile later, Caitlin heard commotion coming from their room. She heard Haze call out and say, “I’m mad at you.” Watching her daughters from the monitor, it quickly became clear to Caitlin that Haze wasn’t talking with her sisters… but to something or someone else entirely.

“These kids are clearly seeing something that we can’t see,” says analyst Lynne McNeill. “They’re yelling at it, they’re hiding from it. I mean… this is really creepy.”