Just Me: Joan and Jeff.

One of my favorite old movies is "Female on the Beach" with Joan Crawford and Jeff Chandler.
It is the story of a woman, Lynn Markham, who's husband has died and she is figuring out what she's going to do .
She was a dancer or something shady and her husband was older, rich, or something that could afford the life she's come to expect.
Part of his estate includes a beach house, which she plans on selling. She goes to check it out with a local real estate agent. Upon looking around she finds out that the tenant who had lived there until just recently has made an unexpected exit. She is dead. The agent tells her that the woman was a quiet older lady, but Lynn sees different. Assorted men's belongings are strewn about here and there. This tenant was spending time with someone..... It's a mystery. she's intrigued, but pissed. She wants her property left alone. Period.

The next morning, she awakes to find a man in her kitchen making coffee and toast. She confronts him. He's Drummy, the local flavor of the month. he explains that he comes and goes as he pleases, and that" it's the way things are done around here" She repels him with her icy demeanor. He gets 'sore' (like most people in the 40's and 50's did....) and leaves.
He has his boat docked at her pier. She wants him out. She tells him she knows his kind, because that's the world she comes from. Like recognizes like...She tells him straight out that she grew up in a large family and had to share everything. Now she wants to share nothing. ...get out Drummy.....
She meets her neighbors. She doesn't know them but she recognizes what they are. They are shifty users. They ask her to play cards. She agrees because it will amuse her to put one over on them. Surprise....Drummy lives with them. He is their "protege". They use him to bilk $$$ out of lonely widows. He was connected to the tenant that died. Lynn is even more intrigued.
She finds that being totally alone isn't all she thought it would be. She gets lonely. She goes and spends time with Drummy. He's fixing the boat. He's dirty. She moves closer. She asks a bunch of personal questions. He gets all quiet. She reaches out. He says something like I'll get you dirty". she responds "I don't care". It is typical dialogue, but no one delivers it like Joan Crawford.
Lynn starts falling for Drummy. He tries to break away from the neighbor's control.
Lynn then finds the previous tenant's diary stuck behind a stone in the fireplace. She reads it.
it is EXACTLY what is happening to her. She starts getting suspicious, and puts herself in danger to figure out just who Drummy is and what happened to the tenant.