Niagara (1953) was a breakthrough movie starring Marilyn Monroe, which was closely imitated (with giving credit) by a tamer version in Alfred Hitchcock's Vertigo a few years later.
A film noir thriller about a plot to murder, Niagara was unrated and received no awards. Marilyn Monroe was paid less than her make-up artist, despite having the starring role.
This was the first movie to give Marilyn Monroe top billing, despite unpaying her, and is considered by critics today to have been underrated at the time. This movie was moderately successful for 20th Century Fox, which produced it, and helped launch Marilyn Monroe's career into bigger promoted movies. Monroe was under contract with 20th Century Fox for most of her career.
Scenic filming at Niagara Falls enhances this movie. Most of the film noir movies of that time were in black-and-white, but this was filmed in Technicolor three-strip.