The team investigates a household terrorized by a demonic infestation and is shocked when they find out the house is next door to Kristen's. Meanwhile, Kristen is surprised to learn that her frozen egg was never destroyed and purchased anonymously which leads her on a new adventure.

The team investigates claims that a demon has been stalking people who have invested in a stock tip. The Entity asks for David's help in transitioning Grace Ling back.

David, Kristen and Ben assess whether a pregnant woman is possessed when she claims one of the twins she’s carrying is evil. Their investigation leads to a fertility clinic where they discover a connection to all of their encounters throughout the season. Also, Kristen questions one of her daughters’ capacity for evil upon realizing that she also used that fertility clinic.

Kristen must protect her family. Sheryl and Leland's war peaks.

The team is dispatched to a monastery to investigate the corpse of Father Thomas, whose body has not decayed in the year following his death.

The team responds to reports of possessed toys and electronics originating from a store. David is tasked with retrieving a hidden message that may be the key to saving the prophet Grace Ling.

A single mother enlists the team to look into the potentially demonic ways the viral app TipTop is terrorizing her family.

The team is sent to investigate the disappearance of a teenage boy, Wyatt.

Sheryl takes action to prevent a catastrophic event.

The team receives disappointing news. Kristen meets mysterious stranger Ellie, who claims to be an old friend of Sheryl's. A game between the two reveals disturbing information about Kristen's future...and about Ellie herself.

Kristen, David and Ben are called to investigate an insidiously addictive Christmas song that's spreading among an increasing number of students, and the dangerous relationship between online influencers and their impressionable young followers.

The team is given the task of evaluating the likelihood of Leland being possessed, which if decided true, would require them to exorcise him.

The team encounters a truck driver whose wife thinks he is possessed and explores the possibility of a demon haunting the highway.

Kristen learns the details of Leland's evil scheme involving her ovum, and Sheryl's involvement in the plot increases the tension between mother and daughter. Meanwhile, David, Ben, and Kristen are sent to investigate a particle accelerator suspected to be a gateway to Hell.

After David is badly wounded, he is determined to fight off the menacing presence of death from his hospital bed.

Kristen, David and Ben investigate a supposed miracle when a teenage girl comes back to life after being declared dead for almost three hours; Kristen meets with her former boss and runs into Leland Townsend.

After the shooting of an unarmed woman, the team is tasked with investigating the police officer who pulled the trigger.

Kristen, David, and Ben look into a possible werewolf attack that isn't what it seems. Andy grapples with his mysterious trauma, while Ben uses science to solve his Jinn problem.

Ben, David, and Kristen investigate the RSM Fertility clinic - since so many of their past cases have led back to the ominous clinic.

Father Mulvehill asks the team for a confidential evaluation, as he fears that he might be the victim of diabolical oppression.

Kristen's surrogacy faces complications, and the team visits a pig farm.

The team visits the Vatican as sinister forces besiege the Bouchard house.

After a high-strung theater producer's behavior turns from demanding to what is believed to be demonic, Kristen, David and Ben must assess the situation. Kristen discredits her nemesis, Leland Townsend, before he can ruin a 17-year-old boy's life.

Kristen, David, and Ben face the horrors of the internet as they investigate a Slender Man-style meme that scares teens into committing blasphemous acts in order to avoid death. Leland trains Sheryl in the fine art of online trolling.

Andy is pushed to deadly measures as the team investigates a speech demon.

The Vatican asks the team to investigate a Hawking-like genius for potential ties to the occult. David's continued aiding of the Entity produces physical effects, and he and Sister Andrea say goodbye to St. Joseph's. Meanwhile, Leland returns home, where David confronts him.

On Halloween night, Kristen and David are sent to assess an exorcism; Ben goes on his favorite show, where he debunks supernatural finds with fellow unbeliever Vanessa.

The team encounters a nine-year-old girl, Mathilda, who is seemingly haunted by a Jinn, a spirit in the Islamic faith.

Bishop Marx tasks the team to investigate a UFO sighting, spotted by an air force pilot.

Sheryl reaches her breaking point with Leland.