John Dall was born John Dall Thompson on May 26, 1920, as the younger son of Mr. Charles Jenner Thompson and Mrs. Henry (née Worthington) Thompson.
He made his Broadway debut in Norman Krasna's comedy, 'Dear Ruth', directed by Moss Hart, in 1944, which was a hit, running for over a year and a half and 680 performances.
He next appeared on Broadway in Jean-Paul Sartre's 'Red Gloves' in 1948, which ran for 113 performances.
Dall's penultimate stint on Broadway, in the 1950 revival of 'The Heiress', was a flop, closing after 16 performances. He had the role of the callow fortune hunter Morris Townsend, played so memorably by Montgomery Clift in William Wyler's 1949 movie version, The Heiress (1949).
Dall received a Best Supporting Actor Oscar nomination for The Corn Is Green (1945),his debut film.
He reached the height of his movie career in 1948, playing one of the two students modeled after the 1920s' thrill killers Leopold & Loeb in Alfred Hitchcock's Rope (1948). Unfortunately for Dall, "Rope" was an interesting flop.
The other role for which he is best remembered, the firearms fetishist in Gun Crazy (1950) (originally released as "Deadly is the Female", the name of the short story the movie was based on),earned him a place in the film noir pantheon. It was a B-movie and, like "Rope", also flopped.
The only prominent film he appeared in subsequently was Stanley Kubrick-Kirk Douglas' Spartacus (1960) in 1960, which - like "Gun Crazy" - was scripted by Dalton Trumbo.
Dall, whose career started out so promisingly in the 1940s, getting an Oscar nod for his movie debut, never gained any traction. He appeared in only eight movies from 1945 to 1961, though he did many TV acting gigs.
He died in 1971, aged 50, of a heart attack due to underlying myocarditis, according to his death certificate.
