David Greenwalt (co-creator of 'Buffy the Vampire Slayer' and 'Angel') and Jim Kouf ('The Search', 'Between Ghosts', 'Rush Hour') sign 'Grimm', a police series in which nothing is what it seems and in which we discover that the fairy tales our parents told us were not just stories to help us sleep. They were warnings. NBC's new fiction has all the ingredients of the classic procedural, such as 'Bones' or 'Fringe', although it includes fairy tale characters such as elves, goblins or gnomes. The series borrows its title from the famous Brothers Grimm, the pair of German writers we all remember for their famous children's stories, and introduces us to Nick Burkhardt (David Giuntoli, 'Privileged', 'The Firm', 'Grey's Anatomy'), an ordinary homicide detective from Portland, Oregon. At least he was, until he starts seeing strange things - things he can't explain. For example, a woman transforming into a creepy harpy, or a skinny guy turning into a bloodthirsty troll. After a visit from his only living relative, Nick discovers the truth behind his visions: he's not like everyone else, and he's not ordinary. He is the descendant of an elite group known as the Grimms, people on a mission to stop the proliferation of supernatural creatures in the world.