Fringe (2008)

S2E5 Dream Logic

In Seattle, a man goes into a frenzy, violently assaulting his boss and insisting that the boss is a demon. Shortly after, the attacker collapses and dies from what seems to be sheer exhaustion. The Fringe Division investigates this bizarre incident, uncovering that it marks the beginning of a disturbing trend. They find that the perpetrators of these attacks were actually experiencing a waking dream state during their violent outbursts, leading them to question the thin line between reality and the subconscious.