Andrew W. Marlowe created something really wonderful with his show Castle. While the police procedural pairing up a unique character with special talents, with a by the book, no-nonsense cop is something TV viewers are accustomed to, both Nathan Fillion and Stana Katic brought something very special to Rick Castle and Kate Beckett. The strong acting, fun writing, and great storylines turned this police mystery show into an eight season fan favorite.