Thupparivaalan (transl. Detective) is a 2017 Indian Tamil-language action thriller film written and directed by Mysskin, and produced by Vishal, who also enacts in the lead role with Prasanna. The film also features Vinay Rai, Anu Emmanuel, Andrea Jeremiah and K. Bhagyaraj. It is loosely inspired by Sherlock Holmes, British writer Arthur Conan Doyle's detective character. The film follows a private detective and his associate who investigates the death of a child's pet dog, which leads to them uncovering a bigger conspiracy. The film was launched in March 2016, and released on 14 September 2017.