In Paris, the weird traveler Mr. Koberman stays in a small pension nearby the Seine River owned by the grandmother of the boy Douglas. Mr. Koberman's strange habits and his aversion to silver cause Douglas to be suspicious that he is a vampire. One morning, when the student Miss Treadwell does not return to the inn, Douglas spies the guest and concludes that whatever the stranger is, something must be done about him. This takes the story to its surprising conclusion.
Claudio Carvalho, Rio de Janeiro, Brazil