"The Locked Door" is an exciting detective novel from the great master of the genre, Mary Roberts Rinehart. In this book, readers will get acquainted with the mysterious events unfolding in a wealthy peasant house, where each resident hides his secrets. Smoothly interweaving threads of intrigue, the author leads us through the cradles of crime, intrigue and unpredictable plot twists. Readers, together with the main characters, will solve the mystery of the sealed door step by step and will try to reveal all the secrets that are hidden behind their arms. "Locked Door" is an exciting journey into the world of mystery and danger that will keep you in suspense until the last page.