A documentary worked on by Alfred Hitchcock and composed almost entirely of footage shot by allied army cameramen in 1945 will be shown at the Eye film museum on Sunday evening.

The documentary, German Concentration Camps Factual Survey, was intended as an educational tool for Germans after the war but was shelved in September 1945 before completion.

The production process was supervised by Hitchcock and was finally completed by experts at Britain’s Imperial War Museum earlier this year. They were able to re-edit a missing reel using the original shot list.

The original narration has also been preserved – including its factual inaccuracies and obvious historical and political biases – and it has been newly recorded, the Hollywood Reporter said.