I never saw the movie, but I read the book. “Rebecca” was written by Daphne Du Maurier. It was a very good story by a talented writer (imho).
Du Maurier also wrote the short story that Hitchcock made into the movie “The Birds.”
I read the book, too. It drove me nuts that we didn’t know the heroine’s name!
Oh my...you beat me to it! LOL.