Phillip Anthony Rodriguez

As Nick (David Giuntoli) and Hank (Russell Hornsby) turn their attention to a string of attacks where victims are left without their memories; Nick weighs whether or not he should regain his Grimm abilities. Trubel (guest star Jacqueline Toboni) joins the investigation and puts herself in harms way. In Vienna, Adalind (Claire Coffee) is being held captive and learns that she is more connected than ever to Nick. Meanwhile, Captain Renard (Sasha Roiz) continues to fight for his life as a mysterious visitor (guest star Louise Lombard) arrives to help him.

The mother of a suspected bomber hires Magnum and Higgins to locate her teen son and turn him in to the authorities. Also, Kumu and Rick help T.C. navigate his guilty conscience when he runs into a past flame.

Tommy launches an informal investigation into a possible LAPD and city government-related conspiracy just as she prepares to fight for her job in front of an ethics committee.

Tommy and her inner circle fight back against an LAPD and city government conspiracy to have her removed as police chief.