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.

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

Potentially demonic pork products lead Kristen, David, and Ben to a pig farm to investigate. David increases his remote viewing skills and Leslie, the surrogate carrying Kristen's child, comes to her for help.

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

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

A possibly possessed dancer leads Kristen, David and Ben to a dance troupe with coven-like practices. Sheryl reaches her breaking point with Leland.

Ben and David join a train engineer who believes he is being haunted on the tracks. Kristen cares for her mother. Ben begins to question his sanity, impacting his relationship with Renee.

David stumbles into the life of a man planning murder-suicide and the team rush to find him. Sheryl executes her plan to stop baby Timothy from becoming the Antichrist.

The team looks into bizarre text messages. Sheryl tries to beat Leland.

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

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.

Sister Andrea gives the team their last assessment, a man who believes his doppelganger has possessed him and has a personal connection to the nun. The three also look for new jobs, and David receives even more bad news. Dr. Boggs faces a tough decision as Leland's trial begins, and the court turns out to have even more treachery afoot.

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.

An ominous countdown begins after the Bouchard girls start a new game on their VR goggles. The Entity moves to stop the Sixty, despite Sister Andrea's warnings. The team receives an offer they never expected. Kristen faces a final threat as Leland takes matters into his own hands.