The case of a serial killer whose wife claims he's demonically possessed introduces psychologist Kristen Bouchard to Catholic assessor David Acosta.
Kristen, David and Ben investigate the case of a teen who returned to life hours after being declared dead. The D.A.'s office hires Leland Townsend.
The team questions a theater producer's claim that he sold his soul for a Tony Award. Kristen confronts Leland. David pursues hallucinogenic visions.
David connects with a nine-year-old boy who may be possessed or suffering psychosis. Kristen's daughters get hooked on an augmented-reality horror game.
On Halloween night, Kristen and David disagree over a woman scheduled for an exorcism. Ben appears on and debunks his favorite TV show, "Demon Hunters."
The Church pressures the team to assess Grace, a doomsday prophet, and discredit her. Kristen is dismayed to discover her mother is dating Leland.
Assessors from the Vatican analyze Grace's prophecies while the team evaluates the guilt of a woman who confessed to murder during her exorcism.
Kristen travels with David to a remote commune in order to learn the meaning of an important symbol that repeatedly appears in his father's artwork.
A lawsuit brought against David and the archdiocese for psychological harm inflicted during an exorcism makes David question his future as a priest.
A holiday song goes viral at a Catholic girls school, prompting an investigation of the influencer that posted it, who is being advised by Leland.
Recovering from a violent attack, David learns his nurse is an "angel of death" who targets Black patients. The team looks for David's assailant.
Kristen fights Leland's efforts to get serial killer Orson LeRoux released. David is taken captive by a woman who claims to seek spiritual guidance.
Kristen is harassed by LeRoux and rejects Sheryl when her mother announces she's engaged to Leland. The team links past cases to a fertility clinic.
Kristen, David and Ben reluctantly field a request from an unlikely source: Leland, who insists he needs an exorcism.
While evaluating a man who claims to see the archangel Michael, David begins having visions of his own. Ben notices Kristen's odd behavior.
Two faiths must collaborate on an exorcism when a fiery Jinn haunts a young girl — and occasionally Kristen. Ben tries to get a demon to go on record.
Ben rides an elevator to hell to find a teenage boy who disappeared while playing a risky game. David faces opposition to his first homily.
Kristen's daughter Lila and her friend Alex go zombie hunting. An assessment of Father Mulvehill yields shocking results. Sister Andrea confronts Leland.
A police officer fatally shoots a woman during a traffic stop and claims demonic possession, not racial bias, is the cause. The team investigates.
At a monastery where everyone must observe a vow of silence, the team reviews the case of a dead priest whose body remains intact a year after his death.
Brain-mapping experiments at Cornell University inspire spiritual experiences in some participants — and also in some investigators.
The trio draws the Vatican's attention while exploring possible UFO sightings by an Air Force pilot and others. Kristen's home life gets complicated.
As the team probes the secretive RMS Fertility clinic, Kristen notices her daughter Lexis is having body image issues. Ben tries to help Vanessa.
The IRS asks the Church to assess a new religious organization seeking tax exemption. Surprises await David and Kristen at Leland's exorcism.
The team looks into the case of a widower and his son, who are plagued by a demonic doll. Sheryl and Leland make power moves. David ponders his faith.
Kristen, David and Ben examine a college student with cannibalistic urges — and find the problem is larger, and more dangerous, than they realized.