Watch Grimm [S4E20] : You Don't Know Jack Full Episode Online for Free in HD <br />@ http://gg.gg/3qsdl <br /> <br />Air Date : October 24th, 2014 <br />Season Number : 4 <br />Episode Number : 20 <br />Episode Name : You Don't Know Jack <br />Networks : NBC <br />Genres : Drama, Fantasy, Mystery <br /> <br />Storyline: <br />The fourth season of the NBC American supernatural drama series Grimm was announced on March 19, 2014. It is set to consist of 22 episodes. The series, created by David Greenwalt, Jim Kouf and Stephen Carpenter, follows a descendant of the Grimm line, Nick Burkhardt, as he deals with being a cop, and trying not to expose his secret as a Grimm. <br /> <br />Casts: <br />Claire Coffee, Silas Weir Mitchell, Bitsie Tulloch, Bree Turner, Reggie Lee, David Giuntoli, Sasha Roiz, Russell Hornsby
