The Rookie is an American police procedural television series created for ABC by Alexi Hawley. The series follows John Nolan, a man in his forties, who becomes the oldest rookie at the Los Angeles Police Department.The series is produced by ABC Studios and Entertainment One.. The series stars Nathan Fillion, Alyssa Diaz, Richard T. Jones, Titus Makin Jr., Mercedes Mason, Melissa O’Neil, Afton …