February 2nd, 1933 was a frosty evening in Le Mans, France. When Monsieur René Lancelin got to his front door, he found it locked and dark. Neither his wife nor his daughter appeared to be home, but a dim light flickered in the maids’ attic room. He ran for the police, and the violent mystery of the events inside the house began to unfold, leading from a gruesome crime scene and a pair of disturbed sisters to a bizarre delusional disorder — folie à deux. Join us for the story of Christine and Léa Papin. --- Welcome to Psychologia, a scientific exploration of the strange and pathological. www.psychologiapodcast.com