The Case of the Mukkinese Battle-Horn (also known as Gone Goon) is a 1956 British short comedy second feature ('B') film directed by Joseph Sterling and starring Peter Sellers, Spike Milligan and Dick Emery. It was written by Harry Booth, Jon Penington and regular Goon show co-writer Larry Stephens, from a story by Stephens, with additional material by Sellers and Milligan.

Plot

Supposedly filmed in "Schizophrenoscope" ("the New Split-Screen"), it concerns Superintendent Quilt of Scotland Yard's attempts to retrieve a "Mukkinese Battle-Horn'" stolen from a London museum. Along the way he meets characters not dissimilar to Eccles, Henry Crun and Minnie Bannister from The Goon Show.