When a Man Marries

Mary Roberts Rinehart, an influential American writer, is often compared to Agatha Christie for her contributions to the mystery genre. Renowned for her innovative storytelling, she is credited with popularizing the phrase "The butler did it," despite not using it herself. Rinehart is also recognized for creating the "Had-I-But-Known" style of mystery writing, which emphasizes the protagonist's hindsight and the unfolding of events that lead to a surprising conclusion. Her work has left a lasting impact on the genre.