Grimm 5×16 “The Believer” – An evangelical preacher (guest star William Mapother) has a tent revival unlike any other when he uses his Wesen identity to gain more believers. Nick (David Giuntoli) and Hank (Russell Hornsby) are called to the scene as things escalate when a group of ‘true believers’ are hell bent on saving the preacher and his flock by any means necessary. Meanwhile, Capt. Renard (Sasha Roiz) takes further steps to gain power in local government. Elsewhere, Eve (Bitsie Tulloch) uses Adalind’s (Claire Coffee) ol’ hat trick to gain more access to Black Claw. Silas Weir Mitchell, Reggie Lee and Bree Turner also star.