Continuity mistake: When Eddie is explaining his father's death, they show a close-up of his head. His hair on the right side of his face is pointing inward. When they switch to a side view of his face, his hair changes how it is lying. (00:12:05)
Continuity mistake: After the bad trip from the isolation tank, the blood and white substance on Jessup's face changes position and amount. (00:46:40 - 00:47:30)
Continuity mistake: Emily is listening to a recording of Eddie's experience in the isolation tank from a previous scene. The recording is slightly different than what actually happened. The growl that Eddie makes in the recording is different from the one he made in the actual scene and Mason's line "Sounds like he was having a bad trip to me" happens instantly after asking Eddie if he is all right, while in the actual scene the he said the line after several seconds. (00:45:50 - 01:18:00)
Continuity mistake: At the beginning during the house gathering, the toilet seat is up while Arthur is gathering ice from a bag that is in the bathtub. We cut to a shot of Emily and then back to Arthur, where the toilet seat is down. (00:06:40)
