Grimm 4×20 “You Don’t Know Jack” Official Synopsis

Grimm 4×20: A Possible Jack the Ripper Copycat

NBC released the official synopsis for Grimm 4×20, titled, “You Don’t Know Jack,” airing Friday, May 1st. Take a look at the description for the upcoming new episode below.

GRIMM 4×20 airs FRIDAY, MAY 1 at 9/8c on NBC

Official Synopsis:

A SERIES OF CONNECTED MURDERS LEAD EVERYONE TO THINK A COPYCAT IS ON THE LOOSE - GARCELLE BEAUVAIS AND NICO EVERS-SWINDELL GUEST STAR - A string of homicides have the press asking Captain Renard if a Jack the Ripper copycat has arrived in Portland. While dealing with the investigation, Nick, Hank, Monroe and Wu deal with a situation they never expected. Meanwhile, Adalind and Rosalee must work together on a last ditch attempt to fix Juliette’s condition. Elsewhere, Juliette decides to help her new ally even if it means hurting those around her.