'The First Case of Unamuno' by Luis García Jambrina (Alfaguara) is a hybrid crime novel. It follows the life of the famous Salamancan detective Miguel de unamuno.

The philosopher is turned into a detective, antihero of a genre that increasingly seeks its characters in the past. The book is being shown at the BCNegra festival in Barcelona, which is celebrating its 10th anniversary this week. It is the sixth installment in the series starring Fernando de Rojas as an investigator, now in its sixth installment.