The British version of the film kept the name of the novel, "The Planter's Wife," whilst the American version changed the name to "Outpost in Malaya" after "White Blood" was abandoned.
Casting well-known Hollywood actress Claudette Colbert proved quite contentious in Great Britain. Many British actors complained that casting Colbert took work away from other worthy British performers.
There were several changes to the script regarding how the Malayan rebels were depicted, due in large part to the real world rebellion between the communist insurgents of the Malayan Races Liberation Army (MRLA) and the newly independent Malayan Union. The film's bandits were ultimately depicted in a violent and unsympathetic light, to reflect British public opinion.
The famous fight scene between the cobra and the mongoose was quite real. The animals were loosed on one another and fought to the death.
This is the first of several films in which actress Claudette Colbert worked outside of the Hollywood studio system.
At one point, Michael Redgrave was rumored for the part of Jim Frazer, a role which was eventually portrayed by Jack Hawkins.
The film was shot on set at Pinewood Studios in England and on location in Sri Lanka, then known as Ceylon.
After years of being defended in Hollywood, Colbert reportedly enjoyed being allowed to do her own action scenes and firing a machine-gun.
Producer Earl St. John insisted on the casting of an American actress to boost US box office takings (this failed). Amongst those considered were Olivia de Havilland, Joan Crawford, Loretta Young and Norma Shearer, but none was willing to commit to a long overseas shoot.
The reference in the opening credits to 'the jungle is neutral' is a tribute to the autobiography of Freddie Spencer Chapman, an officer in the Seaforth Highlanders, who conducted extensive guerrilla actions behind Japanese lines in occupied Malaya during World War II.
Although the action of the movie was supposed to take place in the tropical summer, the film was shot in winter. The actors were constantly frozen to the bones.
This film received its earliest documented USA telecast in St. Louis Saturday 3 November 1956 on KWK (Channel 4); in Chicago it first aired Saturday 15 December 1956 on Movietime USA on WBKB (Channel 7).