Mervyn Johns was a Welsh actor who appeared in 74 films, 32 television shows, and more than 23 plays across six decades on screen and stage. Johns made his theatrical debut while on tour of the British dominions in 1923 and his screen debut with Lady in Danger in 1934. He went on to become an indelible part of British wartime cinema with starring roles in Saloon Bar (1940), The Next of Kin (1942), Went the Day Well? (1942), The Halfway House (1944), Twilight Hour (1945), and Dead of Night (1945). In the postwar era, he worked regularly as a character actor at Ealing Studios, first with starring roles in They Knew Mr. Knight (1946), The Captive Heart (1946), Captain Boycott (1947), Easy Money (1948), and Scrooge (1951), and later guest appearances on televised plays and anthology series.[citation needed]