5 Against the House is a 1955 American heist film noir based on a story by Jack Finney, starring Guy Madison, Brian Keith, and Kim Novak, in one of her first film appearances.
 It was directed by Phil Karlson.
 The movie centers on a fictional robbery of what was a real Nevada casino, Harold's Club.
 The supporting cast includes William Conrad.
 The screenplay was based on Jack Finney's 1954 novel of the same name, which was later serialized by "Good Housekeeping" magazine.
Thomas Michael Keneally, AO (born 7 October 1935) is a prolific Australian novelist, playwright, and essayist.
 He is best known for writing "Schindler's Ark", the Booker Prize-winning novel of 1982 which was inspired by the efforts of Poldek Pfefferberg, a Holocaust survivor.
 The book would later be adapted to Steven Spielberg's "Schindler's List", which won the Academy Award for Best Picture.
Blood Red, Sister Rose (1974) is a novel by Australian writer Thomas Keneally.
The Widow and Her Hero is a novel by the Australian author Thomas Keneally set in Australia during World War II.
Gossip from the Forest is a novel by the Australian author Thomas Keneally which deals with the negotiations surrounding the ending of World War I.
Jack Finney (October 2, 1911 – November 14, 1995) was an American author.
 His best-known works are science fiction and thrillers, including "The Body Snatchers" and "Time and Again".
 The former was the basis for the 1956 movie "Invasion of the Body Snatchers" and its remakes.
Confederates is a novel by the Australian author Thomas Keneally which uses the American Civil War as its main subject matter.
Moses the Lawgiver (1975) is a novel by Australian writer Thomas Keneally.
 The novel is based on the British television series "Moses the Lawgiver", for which Anthony Burgess wrote the script.
A Dutiful Daughter (1971) is a novel by Australian writer Thomas Keneally.
An Angel in Australia is a novel by Thomas Keneally, set in Australia during World War II.

Question: Do both Jack Finney and Thomas Keneally have the same nationality ? 
Answer: no