River Beat is a 1954 British second feature[1] noir crime film directed by Guy Green and starring John Bentley, Phyllis Kirk and Leonard White.

Judy is a radio operator on an American ship duped into smuggling diamonds in the belief that she is delivering cigarettes.

Customs Detective Dan Barker has fallen for Judy and faces a moral dilemma: he must find out whether or not she is guilty, while protecting her from the smugglers.

[3] On the film's release Variety said "The programmer market, currently short of passable supporting filmfare, will find this London-localed melodrama an acceptable filler ... Miss Kirk provides a casting switch to the Anglo-American film efforts Lippert usually releases.

"[4] The Monthly Film Bulletin wrote: "A competent little thriller, which maintains a good pace and has a fairly simple plot with one or two interesting twists.