In the Season 4 premiere, the owners of an abandoned motel are pushed to the brink of evil.

A Pennsylvania politician finds himself doing battle with the ghost of a murderous doctor that haunts his home, and also an ancient pagan god that the doctor once worshipped.

A family claim they are being torn apart by a life-size doll, which they fear is possessed and after their 6-year-old daughter's soul.

A woman who is consumed by guilt over her grandfather's death believes he is haunting her and her family.

A family are fearful of what they describe as a darkness that lurks beneath the inky water of a pond at the back of their property.

A family's dream "forever" home turns into a nightmare when they discover satanic symbols carved into the floorboards and start to believe that a dark, terrifying demon is after one of their souls.

A stroke victim and her family seek a fresh start in a new country home, but instead end up fighting for their lives and sanity when they encounter what they believe to be a band of terrifying Native American spirits.

A woman suspects that something evil is hiding behind a boarded-up fireplace in her apartment in Washington, Mo., which she once thought of as a sanctuary, but now fears is haunted by a witch.

The parents of five girls claim that malevolent forces terrorized them physically and even put a life-threatening curse on the family, which resulted in a near-fatal incident.

Three brokenhearted women renting an old house together seek a fresh start, but instead get what they believe is a supernatural tormentor who is preaching about hell and brimstone.

The story of eight Marines who were sent to guard an ancient and much fought-over outpost in Afghanistan, where they claim they faced a ghostly enemy.

In the Season 4 finale, a couple feel blessed to move into a home that once belonged to their daughter's great-grandmother. That is, until they come to fear that another deceased relative wants them gone.