"Mrs. Papin" is a book by the Finnish writer Juhani Aho, which tells about the relationship between a husband and wife in medieval Finland. The main theme of the book is love and religion, as well as the struggle for decency and dignity in difficult social conditions. The main character, Mrs. Papin, finds herself between moral obligations, religious beliefs and true love. The book opens the reader to deep reflections on the nature of faith and morality, as well as the complexity of moral choices in the life of each person.