Maria trespasses into Purgatory and faces a ghost from her own past; Enos' dark forces draw closer; David confronts a terrible secret.

A demonic lover makes Abigail an indecent proposal; Maria and Dusty grow closer; the Reverend forbids his daughter from seeing David.

Tensions rise targeting David and Grace; Maria faces a mad demon; Bledsoe's past comes back to haunt him.

Maria becomes the target of an obsessive stalker after Abigail leads him on; David falls in with a dangerous group.

Maria enlists Bledsoe's help to destroy a demon and free David from jail. Grace adjusts to life after possession, and Abigail grows stronger.

A possessed exorcist and her troubled brother are forced into a dangerous alliance with a mysterious priest.

Enos's master plan to recruit a demon army is unveiled as a brainwashed self-help cult. Knowing that it might be the only way to stop him, David, Maria, Grace, and Bledsoe attend the life-changing seminar under the pretense of being new recruits. But once they arrive on Sangalo Island, they discover that Enos's trap may be impossible to escape.

Enos pits Maria and David against each other; Abigail makes a dangerous deal; the Reverend fights for Grace's life.