The hunter becomes the hunted in season 3 of Grimm, as Detective Nick Burkhardt and his crew continue to battle fairy tale creatures - which are more real than we ever imagined. "Grimm" is a drama series inspired by the classic Grimm Brothers' Fairy Tales. After Portland Homicide Detective Nick Burkhardt (David Giuntoli, "Turn the Beat Around") discovers he's descended from an elite line of criminal profilers known as "Grimms," he increasingly finds his responsibilities as a detective at odds with his new responsibilities as a "Grimm."