As Andy confronts the strange incidents taking place on the island, his foster home receives a surprising new addition. Marcus investigates a series of natural disturbances with the help of a local wildlife biologist, while Tomas continues to question the strange visions that led him to Seattle. Meanwhile, Bennett's uneasy partnership with the enigmatic Mouse takes a dark turn.

The episode was rated 7.89 from 1085 votes.

Angela grows restless as her daughter's condition continues to deteriorate, and the demon turns its attention toward innocent victims. While Father Tomas is paid a visit by a familiar face from his past, Marcus journeys to an unexpected destination and receives guidance from a most unlikely source. With time quickly running out, the two priests must decide whether to defy the church by performing an unsanctioned exorcism.

The episode was rated 7.87 from 2483 votes.

As Father Bennett and Mouse head west to rendezvous with Marcus and Tomas, new details about Mouse's tragic past comes to light. With time running out to finish the exorcism, one of the foster children is faced with a difficult choice. But the demon has other plans.

The episode was rated 7.82 from 961 votes.

With no sign of their missing daughter, the Rance family begins to disintegrate; Marcus looks to Mother Bernadette for help with the latest problem; news of Casey's possession goes public and Father Bennett continues his probe into Tattersal.

The episode was rated 7.81 from 2145 votes.

Angela Rance suspects a demonic presence has entered her home, and enlists the help of Father Tomas Ortega, who calls on experienced exorcist Father Marcus Keane.

The episode was rated 7.80 from 3233 votes.

The situation at the foster home continues to deteriorate, as Andy tries to help his foster daughter, Grace overcome her agoraphobia. Meanwhile, Marcus and Tomas travel to Seattle where they encounter a new possession case, discovering a young girl who has been targeted by a force of pure evil. Father Bennett tracks down a rogue church operative named Mouse who is waging a one-woman crusade against the demonic conspiracy.

The episode was rated 7.76 from 1209 votes.

As the exorcism begins, the fate of the foster home hangs in the balance. This is an adversary unlike anything Marcus and Tomas have ever faced, and in order to save this family, the two of them must journey into the mouth of madness itself.

The episode was rated 7.76 from 947 votes.

When Bishop Egan denies Tomas permission to perform the exorcism on Angela's daughter, Father Marcus breaks out of Saint Aquinas and joins forces with Tomas, though he urges him to get his ex, Jessica, out of his life and heart. The Rance family's relationship with the demon deepens and when Marcus catches Angela stealing holy water, he instructs her on how to use it. On Chicago's south side, a series of bizarre ritual killings begin taking place.

The episode was rated 7.75 from 2768 votes.

Tomas and Marcus attempt to escape the custody of Cindy's enraged family, while simultaneously trying to finish her exorcism. Rose conducts her inspection of Andy Kim's household and is concerned about Caleb's mental state. Meanwhile, Andy's neighbors offer to teach the children farming skills, but there's something sinister behind their intentions. Additionally, Verity may be hiding something from the rest of her foster family. Then, Father Bennett tries to warn the Office of Exorcism of a new threat, but finds his attempts railroaded by menacing forces.

The episode was rated 7.73 from 1281 votes.

Season two picks up six months after leaving Chicago with Father Tomas continuing his training to become an exorcist under the watchful eye of his partner Marcus Keane. Their travels lead them to a troubled young woman in rural Montana, where their investigation puts them in the crosshairs of her extended family. But as Tomas' skills continue to grow, Marcus begins to worry that his apprentice is taking unnecessary risks. The action then switches to a secluded private island off the coast of Seattle, where Andy Kim runs a group home for at-risk foster children, whose lives are disrupted when the state sends a social worker to determine whether the foster home should be closed. Little do they know the true danger is yet to come: a malevolent presence that has set its sights upon one of the children in Andy's care.

The episode was rated 7.64 from 1442 votes.