A doctor invites his relatives to his castle, all the while planning to murder them when they arrive. However, when he himself is murdered, the relatives know they have to find the killer before he gets all of them.
| Actor | Role |
|---|---|
 Howard VernonDam Gaillimh | Dam Gaillimh |
 Tota AlbaTeodora | Teodora |
 Danielle GodetGreta | Greta |
 José María SeoaneInspector de policia | Inspector de policia |
 Rosita YarzaSarah | Sarah |
 María SaavedraJudith | Judith |
| AAdolfo ArlésPablo | Pablo |
 José BastidaDaniel | Daniel |
 Fabián CondeNot listed | Not listed |
| EEmilio S. EspinosaNot listed | Not listed |
| NNuria GimenoNot listed | Not listed |
 Mery LeyvaRebecca | Rebecca |
 Javier de RiveraNot listed | Not listed |
 Alice ArnoNaked Girl (French version) (uncredited) | Naked Girl (French version) (uncredited) |