Who is Jack the Ripper? - Grimm Round Up

That is the big question: Who is Jack the Ripper? There are some possible answers and guesses by fans. Some say it could be Renard because he is obviously possessed by a dark spirit....just like Jack was/is. Others say it's Juliette, doing more evil work in Portland.

To have the answer to this we have to wait for Friday's new episode 4.21 "Headache" to find out.

Here's what you have to know:

"HEADACHE" THE MANHUNT CONTINUES FOR A VICIOUS SERIAL KILLER - JACQUELINE TOBONI RETURNS AS 'TRUBEL'

While investigating a grisly murder, Nick (David Giuntoli) and Hank (Russell Hornsby) get closer to uncovering the identity of the serial killer while Wu's (Reggie Lee) life is put in grave danger. Having turned down Monroe (Silas Weir Mitchell) and Rosalee's (Bree Turner) offer, Juliette (Bitsie Tulloch) solidifies a new alliance as she works to get her revenge. Elsewhere, Trubel (guest star Jacqueline Toboni) makes a surprising return to Portland. Sasha Roiz and Claire Coffee also star. Nico Evers-Swinderll guest stars.

Sneak Peek: http://cms.springboardplatform.com/previews/677/video/1519367/sotv036