An officer discovers a demon lurking inside an abandoned building; a paramedic is trapped inside a speeding ambulance with a ghost; a shoot-out attracts a mysterious entity.

A Chicago cop faces an evil entity in a bar; a rookie officer patrols the haunted floor of a courthouse; paramedics aid a man possessed by a demon.

Paramedics aid a woman tortured by a spirit; an officer helps a man being stalked by a dangerous creature; an officer investigates strange sounds in a woman's basement.

The restless dead call out to an officer; a night patrol encounters a mysterious light in the sky; a rookie officer comes face to face with a legendary spirit.

A voice compels first responders to a deadly crash; officers help a woman tormented by voices; firefighters are called to a legendary haunted mansion.

Officers witness the beginning of a monstrous legend; an officer comes face to face with a ghost on a Civil War battlefield; helicopter policemen try to outrun a UFO.