First of a new six-part supernatural drama series. When Father Jacob is approached by a young girl who believes her father has been possessed by the devil, he must overcome both his own scepticism and the misgivings of his church colleagues in order to perform a dangerous exorcism, and ensure the girl's safety.

With Vimal dead, Jacob realises that all his friends are in danger. He is forced to meet Vimal's murderer on his terms in order to exorcise him, which sees his own faith being threatened.

Though under increasing pressure from the Catholic Church to stop performing exorcisms, Jacob pays a visit to a prisoner who displays signs of possession. The case takes a strange turn, however, when Jacob realises that his subject may have been possessed by a saint.

Jacob is called to an abortion clinic, where he discovers a pregnant woman who is possessed by unborn demons.

A sinister apparition of the Virgin Mary haunts a Muslim family who seem to have a connection to Michael. Father Jacob realises he will lose Michael's soul forever unless he can convince the family that the apparition is fake.

Weakened by his crisis of faith, and with Michael on the loose, Father Jacob realises that he needs to be exorcised himself. With Bukovak blocking all normal channels, Jacob is forced to coax Vincenzo out of retirement if he is to have any hope of defeating Michael before he can carry out his plans.