Before settling on a career as a photojournalist (which apparently cost him his life in 1970), Errol Flynn's son Sean enjoyed a brief career in international espionage films. The best of this lot was
Stop Train 349 (64), though the subsequent Five Ashore in Singapore also had its pleasurable moments. In the latter film, Flynn plays a CIA agent, in search of five American marines who have disappeared while on leave in Singapore. Also known as Singapore, Singapore, Five Ashore in Singapore was based on a novel by Jean Bruce. ~ Hal Erickson, All Movie Guide