This movie is about a young woman who marries the wealthy father of a university friend, but quickly falls in love with a younger man. The jilted husband hatches an unusual plan for revenge by framing the adulterous couple with his own murder and sealing them in a room in his isolated villa with his dead body. Since most of this movie takes place in a single location,the movie quickly becomes paranoid and claustrophobic as the young couple fall apart debating about what has happened and what to do about it.
This Italian-Spanish co-production to some extent resembles the then popular Italian gialli, but it lacks a lot of the more garish and delirious elements of that genre. It stars Rosalba Neri as the unfaithful wife (who was perhaps a little long in the tooth to be playing a university student). Unfortunately, the dubbed Spanish-language copy I saw edited out all of her no doubt copious nude scenes as Spanish censors at that time was wont to do (Damn Generalisismo Franco! First, he kills hundreds of thousands of people, then he sets up a 40 year fascist dictatorship, and now this!).
This was obviously a very low-budget movie and it's very limited in its sets, but at least it doesn't last long enough for anyone to get too bored. The version I saw (on Mexican television) looked pretty decent at least, but I would have preferred an unedited version (and with some English subtitles). Worth a look though I guess.
Addendum: I recently saw the French version, which does have some brief nudity from Neri (but still might be cut). Unfortunately, this probably doesn't justify the crappy looking, full-screen presentation, but if you find the English-subtitled version the previous reviewer mentioned, well, maybe. . .
