Promotional Photos for Grimm episode 4.21 "Headache"

NBC has released the official Promo Photos for the Grimm episode 4.21 "Headache"

THE MANHUNT CONTINUES FOR A VICIOUS SERIAL KILLER – JACQUELINE TOBONI RETURNS AS ‘TRUBEL’

While investigating a grisly murder, Nick (David Giuntoli) and Hank (Russell Hornsby) get closer to uncovering the identity of the serial killer while Wu’s (Reggie Lee) life is put in grave danger. Having turned down Monroe (Silas Weir Mitchell) and Rosalee’s (Bree Turner) offer, Juliette (Bitsie Tulloch) solidifies a new alliance as she works to get her revenge. Elsewhere, Trubel (guest star Jacqueline Toboni) makes a surprising return to Portland. Sasha Roiz and Claire Coffee also star. Nico Evers-Swinderll guest stars.

GRIMM -- "Headache" Episode 421 -- Pictured: (l-r) Nico Evers-Swindell as Prince Kenneth, Bitsie Tulloch as Juliette Silverton -- (Photo by: Scott Green/NBC)

GRIMM -- "Headache" Episode 421 -- Pictured: Bitsie Tulloch as Juliette Silverton -- (Photo by: Scott Green/NBC)

GRIMM -- "Headache" Episode 421 -- Pictured: Sasha Roiz as Captain Sean Renard -- (Photo by: Scott Green/NBC)

GRIMM -- "Headache" Episode 421 -- Pictured: Bitsie Tulloch as Juliette Silverton -- (Photo by: Scott Green/NBC)

GRIMM -- "Headache" Episode 421 -- Pictured: Bitsie Tulloch as Juliette Silverton -- (Photo by: Scott Green/NBC)

GRIMM -- "Headache" Episode 421 -- Pictured: (l-r) Nico Evers-Swindell as Prince Kenneth, Bitsie Tulloch as Juliette Silverton -- (Photo by: Scott Green/NBC)

GRIMM -- "Headache" Episode 421 -- Pictured: (l-r) Jacqueline Toboni as Trubel, David Giuntoli as Nick Burkhardt, Russell Hornsby as Hank Griffin -- (Photo by: Scott Green/NBC)