Episode 1: Freddy. A variety theater company is heading to a city where it will perform for a few weeks. However, the members of the show will die every day at the hands of an impossible murderer.

Episode 2: El caso del Señor Valdemar. Mr. Valdemar, a terminally ill patient, asks his friend, a hypnotist doctor, to apply this treatment with a result that nobody could expect.

Episode 3: El fin empezó ayer. In a University a professor suspects of the powerful intelligence of one of the students. As long as several crimes take place.

Episode 4: El trapero. Edmond, an old and poor ragman who lives with his wife Berenice in the suburbs of the city suspects that his son, addicted to alcohol, is the culpable of the profanation of several tombs in the near cemetery.