Judge Francis J. Quinncannon (Barry Fitzgerald), Dr. Edward G. Armstrong (Walter Huston), Philip Lombard (Louis Hayward), Detective William Henry Blore (Roland Young), the secretary Vera Claythorne (June Duprez), Prince Nikita 'Nikki' Starloff (Mischa Auer), Gen. Sir John Mandrake (Sir C. Aubrey Smith) and Emily Brent (Judith Anderson) are invited by the mysterious Mr U. N. Own to spend the weekend in an island and they are hosted by the newly-hired butler Thomas Rogers (Richard Haydn) and his wife and housekeeper Ethel Rogers (Queenie Leonard).
Thomas explains that Mr. Own will arrive later and following the instructions of his master, he plays a record where the host explains that all of them have been accused of murder. Further, they realize that none of them actually knows Mr. Own. Vera plays a song about Ten Little Indians on the piano and they see a decoration on the table with ten Indians. Soon they are killed one-by-one while the each Indian vanishes from the decoration. Who might be the mysterious killer?
"And Then There Were None" is an engaging thriller based on a novel and a stage play by Agatha Christie. René Clair makes an excellent theatrical but never boring film, supported by magnificent performances and a delightful screenplay with tense and humorous situations. My vote is eight.
Title (Brazil): "O Vingador Invisível" ("The Invisible Avenger")