In 1947, Farrow made one of his most highly regarded films, the noir The Big Clock (1948) with Ray Milland and O'Sullivan. He was reunited with Ladd for a military drama, Beyond Glory (1948), then returned to noir with Night Has a Thousand Eyes (1948), starring Edward G. Robinson from a Cornell Woolrich novel, and Alias Nick Beal (1949), with Milland.
As one of the few high-profile Australians in Hollywood during the 1930s, Farrow's activities were well covered by the Australian media. He accepted the Oscar won by the Australian documentary Kokoda Front Line! (1943), met Australian Senator Richard Keane, the Minister for Trade and Customs, when he visited Hollywood during the war and offered to assist in the establishment of an Australian information service in the US. He also often expressed a desire to make a film back in Australia and later made two films with Australian connections, Botany Bay (1953) and The Sea Chase (1955), despite having ceased to be a British subject in 1947 and thus never acquired Australian citizenship when it was created in 1949.