Thupparivaalan (transl. Detective) is a 2017 Indian Tamil-language action thriller film written and directed by Mysskin. The film is produced by Vishal, who also stars in the lead role with Simran. The film also features Prasanna, Vinay, Anu Emmanuel, Andrea Jeremiah and K. Bhagyaraj. The film and its titular protagonist were both loosely inspired by British writer Arthur Conan Doyle's detective character, Sherlock Holmes; he has been given the credits in the opening of the film. The film's narrative centres on Kaniyan Pongundran, a detective who starts investigating the murder of a kid's pet dog, and soon finds himself threatened by the criminal behind a much bigger conspiracy.