"The Man in Lower Ten" by Mary Roberts Rinehart is a detective novel written during the early 20th century. The story revolves around Lawrence Blakeley, an attorney who becomes embroiled in a complex murder mystery on a Pullman car traveling between Washington and Pittsburgh. As Blakeley navigates through a series of strange occurrences, a significant crime intersects with personal drama and suspense, steering his life in unexpected directions. The opening of the novel introduces Lawrence Blakeley, who is preparing for a trip to Pittsburgh while recounting a disquieting past incident involving "the man in lower ten" that has left him weary of circumstantial evidence. Blakeley’s travels commence with his friend McKnight handing him a bag of forged notes for safekeeping, all the while expressing a sense of foreboding about his journey. As he boards the train, he finds himself in a markedly uncomfortable situation with an occupying drunk in his berth, leading to further complications when he wakes up to discover a murder in lower ten. Through a blend of mystery and developing relationships—including a potential romantic interest—the opening sets the stage for Blakeley's tumultuous and unpredictable adventure ahead. (This is an automatically generated summary.)