Murder with Mirrors
Starring Helen Hayes, Bette Davis, John Mills, Leo McKern, Liane Langland, John Laughlin, Dorothy Tutin, Anton Rodgers, Frances de la Tour, John Woodvine
It's a drama and action & adventure movie, and has a rating of 6.3 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Spain.