Iron Hans

"" is the nineteenth episode of Season 4 of Grimm and the eighty-fifth episode overall. It first aired on April 24, 2015 on NBC.

Press Release
THE HUNT IS ON AS A WESEN RIGHT OF PASSAGE BECOMES DEADLY - JEFF FAHEY AND NICO EVERS-SWINDELL GUEST STAR - Nick (David Giuntoli) and Hank (Russell Hornsby) are brought in to investigate a homicide they learn is connected to an age-old Wesen rite of passage. Meanwhile, Juliette (Bitsie Tulloch) makes a surprising new ally. Elsewhere, Captain Renard (Sasha Roiz) continues to battle a darkness within, and Nick finds hope for Juliette in the last person he expected - Adalind (Claire Coffee). Silas Weir Mitchell, Reggie Lee, and Bree Turner also star.

Wesen

 * Blutbad
 * Fuchsbau
 * Half-Zauberbiest
 * Hexenbiest
 * Löwen
 * Mauvais Dentes (seen in Grimm Diaries only)
 * Lebensauger (seen in Grimm Diaries only)
 * Dämonfeuer (seen in Grimm Diaries only)

Continuity

 * Adalind and Nick's child is revealed to be a boy.
 * Juliette lights the trailer and its contents on fire.
 * Sean's temporary loss of conscious awareness, accompanied by him attacking people, continues from, a side-effect of what his mother did to save his life.

Trivia

 * This is the first episode to share the same name with one of the Grimm's Fairy Tales.
 * The first murder is at mile marker 19, which is a reference to the episode number (419) without using the season number.
 * This is the first episode where the opening quote had black text instead of white.