I saw a movie years ago and these details may not be in order so bear with me. The only details I can remember is siblings/cousins who were in an old house in the woods and they were going through some pictures in the attic their father had hidden. They soon realized that one of their siblings an older brother I believe had fallen in love with his sister. I believe one of their sisters committed suicide and they didn’t know why until they found the pictures. I remember them being at a creek or an old swim hole in the flashbacks. The last thing I remember is family sitting at the dinner table when all kinds of secrets come out. (I also believe the siblings found an old camera reel that had alot of pictures on it in an attic and the father caught them and got upset because he didn’t want them to see it.)