Grimm S04E22 Synopsis: Cry Havoc (5/15)

A HORRIFYING DISCOVERY SETS NICK ON A WAR PATH -

JACQUELINE TOBONI AND NICO EVERS-SWINDELL GUEST STAR -

On the heels of a shocking discovery, Nick (David Giuntoli) is hell bent on getting revenge and taking the fight to the Royals with help from Trubel (guest star Jacqueline Toboni).

Meanwhile, Juliette's (Bitsie Tulloch) alliance continues to lead her down a dark path.

Russell Hornsby, Silas Weir Mitchell, Sasha Roiz, Reggie Lee, Bree Turner and Claire Coffee also star.

GRIMM -- "Cry Havoc" Episode 422 -- Photos by: Scott Green/NBC