Brad Armacost

Severide wants to implicate the serial arsonist, Dawson and Shay face the unexpected on a routine call, suspicions indicate Clarke is the mole, and Mouch campaigns for union president.

Bishop Egan denies Tomas permission to perform the exorcism on Angela's daughter and the Rance family's relationship with the demon deepens.

The new TV series starring Geena Davis, Alan Ruck and Ben Daniels. Marcus and Tomas show footage from the Rance home to papal emissaries.

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

Marcus and his companions race to avert a tragedy on the eve of Pope Sebastian's visit to Chicago; Tomas is offered a life-altering opportunity; a new problem threatens to tear the Rance family apart.