Michael Callan (Mysterious Island), Lionel Jeffries (The Scarlet Blade), and Denholm Elliott (The Missionary) lead the all-star cast of You Must Be Joking!, a riotous British comedy from director Michael Winner (The System).

Army psychologist Major Foskett (Terry-Thomas, School for Scoundrels) tasks four soldiers with completing a scavenger hunt, with each rushing to collect six symbols of British life within forty-eight hours.

Produced by Charles H Scheer (The 7th Voyage of Sinbad) and written by Alan Hackney (Sword of Sherwood Forest), You Must Be Joking! showcases an astonishing array of British comedy talent.