 He was educated at Long Island's La Salle Military Academy.Through the late 1930s to the early 1960s he appeared in supporting roles in many Hollywood films, beginning with James Whale's "The Road Back" (1937) and ranging from Alfred Hitchcock's "Spellbound" to "Rocketship X-M".Emery appeared on Broadway in "John Brown" (1934), "Romeo and Juliet" (1934-1935), "The Barretts of Wimpole Street" (1935), "Flowers of the Forest" (1935), "Parnell" (1935-1936), "Alice Takat" (1936), "Sweet Aloes" (1936), "Hamlet" (1936-1937), "Antony and Cleopatra" (1937), "Save Me the Waltz" (1938), "The Unconquered" (1940), "Liliom" (1940), "Retreat to Pleasure" (1940-1941), "Angel Street" (1941-1944), "Peepshow" (1944), "The Relapse" (1950), "The Royal Family" (1951), "The Constant Wife" (1951-1952), "Anastasia" (1954-1955), "Hotel Paradiso" (1957), and "Rape of the Belt" (1960).