A rookie EMT sees flickering lights and hears strange noises after an elderly patient dies, and a man's spirit watches over paramedics as they attempt to save him on Christmas Eve.

A prison guard hears unnerving noises and sees ominous shadows while on patrol, an unseen force repels first responders at the scene of a suspicious suicide and an EMT encounters the anguished spirit of man at a roadside hotel.

A corrections officer is overwhelmed by a dark energy at a 200-year-old prison, and paramedics rush to the aid of a man who claims he's been cursed by black magic.

A prison guard is attacked by an invisible assailant, a rookie police officer answers a phantom phone call from an abandoned nursing home and an EMT is stalked by an angry spirit.

An EMT encounters aggressive spirits in a building that once housed an animal testing lab, a paramedic and his partner enter a house of horrors and a police officer investigates sinister paranormal activity at his own station.

A paramedic is haunted by the restless spirit of a dead Army officer, and a security guard encounters a demonic presence while investigating an abandoned hospital ward.

A firefighter encounters a terrifying apparition at the scene of a house fire, a police officer witnesses a ghostly priest administer last rites to a critically injured child and a security guard hunts for an invisible intruder inside a remote warehouse.

An EMT has a close encounter with the spirit of a car crash victim, a shadowy entity stalks a police officer and her partner while they investigate an abandoned home and a paramedic witnesses a patient's horrific transformation.

A rookie EMT gets an unwanted guest, a haunting lullaby lures firefighters inside a burning building and a paramedic encounters a ghostly figure on a remote road.

A dark entity attacks a security guard in the basement of a nursing home, an EMT has a chilling encounter with a dying man and a paramedic hears ghostly children playing in an old barn.

Campus police uncover disturbing evidence of dark Satanic rituals in an abandoned dorm, and the ghost of a teenage car accident victim follows a firefighter home.

A firefighter answers a call for help at a house of evil, police chase down the terrifying specter of a dead doctor and an officer is surrounded by a strange fog and shadowy figures while investigating an abandoned car.

A police office encounters a terrifying entity while investigating a home invasion, a tortured apparition wreaks havoc on a top-secret government site and paramedics are brutally attacked by an unseen force at an asylum.