Evil, Let X = 9

The Catholic Church hires forensic psychologist Kristen Bouchard to determine whether a serial killer is possessed by a demon or merely a psychopath.

Kristen, David and Ben investigate a supposed miracle when a teenage girl comes back to life after being declared dead for almost three hours.

After a theatre producer's behaviour turns from demanding to what is believed to be demonic, Kristen, David and Ben must assess the situation.

The team is hired to evaluate a 9-year-old boy who takes a liking to David, which leaves them hopeful they can curb his violent behaviour.

David and Kristen disagree about an exorcism. Ben tries to debunk TV ghost hunters.

The Catholic Church asks Kristen, David and Ben to assess the veracity of a local prophetess, Grace Ling, and they are shaken when they see one of her visions come to life.

When Bridget confesses to murder during her exorcism, Monsignor Korecki asks Kristen, David and Ben to investigate.

When David recognises one of the sigils in the Poveglia Codex from his father's art, he and Kristen journey to a remote art commune to investigate.

David is shocked to learn he is being sued for inflicting severe psychological harm on Caroline Hopkins, after he assisted in her exorcism.

Kristen, David and Ben are called to investigate an insidiously addictive Christmas song that's spreading among an increasing number of students.

After David is badly wounded, he is determined to fight off the menacing presence of death from his hospital bed.

Leland tries to get serial killer Orson Leroux's conviction overturned. Kristen is in court when her daughter, Laura, needs emergency heart surgery.

David, Kristen and Ben assess whether a pregnant woman is possessed when she claims one of the twins she's carrying is evil.