Set in the 1950s, New York City about a middle-age director married to a famous actress. He meets a young female aspiring writer who iis new to NY, alone, and doesn't have a nice place to live or write, so he lets her use his apartment while his wife is out of town.
The wife returns home and the husband is nervous about how his relationship with the young girl will look.
Incidentally they have neighbors who live in an apartment in the same building. Somehow the girl ends up dead in one of the bedrooms (I believe in the neighbor’s apartment), and it looks as if the husband is guilty...although I believe she committed suicide and is trying to frame him.
In the end, it is revealed that she is the niece of a man the director knows, so the whole thing...their meeting, their relationship, etc. appears to be a setup.