Two friends were kidnapped on the road to Sintra by three masked men and taken to a mysterious house. In the house there is a corpse. The usual questions arise: who was he? How did he die? Was it a natural death or a murder? Who was the perpetrator or the instigator of the crime? The two friends are the two narrators - Eca de Queiroz and Ramalho Ortigao - whose story was published in the form of letters to the editor recounting what happened to them."