Contratiempo (The Invisible Guest) is a Spanish locked room murder mystery about a successful businessman who wakes up in a hotel room with his dead mistress On the night before his case he gets together with a highly praised attorney to try get the facts straight for his defense, revealing a deeper mystery hidden in the past, and the possible culprit. Unfortunately the movie telegraphs its end game so obviously early on that it's hard not to catch on, but even so the movie offers enough suspense in its many turns and twists that you'll be moderately engaged for as long as it lasts.