Grimm › Season 4

S4 E20: 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.

Air date	May 1, 2015
Runtime	43 minutes
TMDB rating	★ 7.2/10