NBC has released the synopsis for episode #510 of Grimm, which you can check out below. The installment, titled “Map of the Seven Knights,” is officially described as follows:
MONROE GETS A CALL THAT WILL LEAD NICK TO AN INCREDIBLE DISCOVERY – JACQUELINE TOBONI AND DAMIEN PUCKLER GUEST STAR – Monroe (Silas Weir Mitchell) gets a call from a relative in Germany that will bring Nick (David Giuntoli) closer to his ancestors. Things get complicated when the nefarious group Black Claw is also after the same artifacts. Elsewhere, Capt. Renard (Sasha Roiz) helps a mayoral candidate get an edge on his opponent. Meanwhile, Trubel (guest star Jacqueline Toboni) confronts Eve (Bitsie Tulloch) about Nick and Adalind (Claire Coffee). Russell Hornsby, Reggie Lee and Bree Turner also star.
Grimm “Map of the Seven Knights” airs Friday, February 19, at 9pm on NBC.