The Great Mouse Detective is a 1986 American animated mystery adventure film produced by Walt Disney Feature Animation and released by Walt Disney Pictures. Based on the children's book series Basil of Baker Street by Eve Titus and Paul Galdone, the film is written and directed by John Musker, Dave Michener, Ron Clements, and Burny Mattinson. Featuring the voices of Vincent Price, Barrie Ingham, Val Bettin, Susanne Pollatschek, Candy Candido, Diana Chesney, Eve Brenner, and Alan Young, the plot follows the titular mouse detective, Basil of Baker Street, who undertakes to help a young mouse find and save her father from the criminal mastermind Professor Ratigan.