When Steve Emery (Glenn Ford) arrives in Trinidad at the urgent request of his brother, he is stunned to find that his brother has not only been murdered, but that his brother's wife Chris (Rita Hayworth) is succumbing to the seduction attempts of the man who quite possibly is the murderer. His feelings are further exacerbated when he discovers that he, too, is becoming strongly attracted to Chris, who is a steamy cabaret singer. She, in turn, is playing off one against the other while betraying the secrets of both men to the police, for whom she is secretly working.
This is a pretty good movie.
I love old movies. The stars of the '30's and '40's could typically sing and dance as well as act. Case in point: Rita Hayworth. Her parents were professional dancers and young Rita was part of the act. After her mother's death, a teen-aged Rita became her father's dance partner. In quite a few of her movies, they put her dancing skills on display. In Affair in Trinidad (1952), there are two dance numbers.
Here is the first.