Grimm - Season 4 - Eps 20: You Don't Know Jack
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.
About Grimm

Title: Grimm
First Air Date: 2011-10-28
Last Air Date: 2017-03-31
Status: Ended
Rating: 8.265/10 (from 3300 votes)
Language: EN
Seasons: 7
Total Episodes: 122
Network: NBC
Genres: Drama, Mystery, Sci-Fi & Fantasy
Production Companies: Universal Television, Hazy Mills Productions, Universal Media Studios
Synopsis
After Portland homicide detective Nick Burkhardt discovers he's descended from an elite line of criminal profilers known as "Grimms," he increasingly finds his responsibilities as a detective at odds with his new responsibilities as a Grimm.
Cast

David Giuntoli
Nick Burkhardt

Silas Weir Mitchell
Monroe

Russell Hornsby
Hank Griffin

Sasha Roiz
Sean Renard

Reggie Lee
Drew Wu

Bree Turner
Rosalee Calvert

Claire Coffee
Adalind Schade

Elizabeth Tulloch
Eve