Classic public domain film, digitally preserved and free to stream forever.
And Then There Were None (1945) is a masterful thriller based on Agatha Christie's novel, in which ten strangers are lured to a remote island under various pretexts and then begin dying one by one in accordance with a nursery rhyme — as the survivors desperately try to identify the killer hiding among them.
Starring Walter Huston, Barry Fitzgerald, and Louis Hayward. This film is in the public domain and free to watch, download, and share.