A YOUNG BOY'S AILMENTS LEAD EVERYONE TO THINK THEY ARE DEALING WITH A CASE OF DEMON POSSESSION -
- Nick (David Giuntoli) faces his toughest challenge yet when he and Hank (Russell Hornsby) investigate a case that combines religious phenomenon with the dark dealings of the Wesen Council.
- Meanwhile, Rosalee (Bree Turner) is torn when Nick's case challenges her Wesen loyalties.
- Elsewhere, Captain Renard (Sasha Roiz) leaves town to tend to some "family matters."
Bitsie Tulloch, Silas Weir Mitchell, Reggie Lee and Claire Coffee also star.