I'm not very familiar with all the Spanish actors and actresses but I'm sure the ones in this movie must be the better ones from Spain. Because the acting is really good in Contratiempo or The Invisible Guest. The story is everything you want when you want to watch a mystery crime thriller. It's never boring, with plenty of twists and turns. All you want to do is know how this story will end. It keeps your attention from the first second till the last one. I saw plenty of Spanish movies and some are really good, way above average. This one is definitely one of the good ones. If you look for a good entertaining mystery movie search no further and watch The Invisible Guest. You won't regret it.