Frixos Constantine presents an Anglo-Soviet co-production by Poseidon Productions Ltd., England, Sovietfilm and Mosfilm, U.S.S.R ; written and directed by Emil Lotianou ; Western version supervised by Michael Powell
an Antelope production in association with Orfeo Films, Radio Telefis Eireann and Reiner Moritz Associates ; executive producer, Mick Csaky ; producer & director, Patricia Foy