Paranormal Occurrences in Serial Experiments Lain

There are multiple instances of Paranormal occurrences in Serial Experiments Lain.

Ectoplasm

The first instance of a paranormal occurrence the viewer sees is in Layer 01 when Lain is in class, the board becomes blurry, and outlets open in her fingers with ectoplasm emitting from them.

Aliens

Another instance of this is in layers 09 and 11. In the first appearence, in Layer 09, the alien appears in front of Lain and has grey skin, a small body, with long arms and an over-sized head. It's eyes are large, almond-shaped, and dark. In the second appearence, in Layer 11, it appears in Alice's room with the same body but with the face and personality of Lain. In both layers, the aliens are wearing green and red striped sweaters, which is likely a reference to the film A Nightmare on Elm Street.

Roswell incident

The Roswell Incident is a real life paranormal occurrence which is mentioned in Layer 09. Learn more about it here.