David's relationship with Kristen takes a turn when he gives into his temptation; the team studies a machine used to measure the weight of the human soul as it leaves a dying body.
David, Kristen and Ben investigate a Slender-Man like internet meme that is quickly spiraling out of control and inducing teenagers to commit blasphemous acts in order to avoid death.
Sister Andrea joins the team to fix a demonically possessed marriage.
The team encounters a truck driver whose wife thinks he is possessed and explores the possibility of a demon haunting the motorway.
Sister Andrea's career and sanity are on trial as she battles Leland; meanwhile the team investigates an alleged angel sighting.
A single mother enlists the team to look into the potentially demonic ways the viral app TipTop is terrorising her family.
Katja Herbers
Kristen Bouchard
Mike Colter
David Acosta
Aasif Mandvi
Ben Shakir
Michael Emerson
Leland Townsend
Christine Lahti
Sheryl Luria