Anna Katharine Green's novel, 'The Millionaire Baby,' is a compelling mystery set in the early 20th century. The story follows a wealthy family caught in a web of deception and intrigue surrounding the disappearance of their infant daughter. Green's meticulous attention to detail and clever plot twists make this book a standout in the detective fiction genre of the time. Through vivid descriptions of settings and characters, Green creates a suspenseful atmosphere that keeps the reader captivated until the very end. Her skillful use of clues and red herrings adds to the complexity of the mystery, making it a challenging and satisfying read. Anna Katharine Green, known as the 'mother of the detective novel,' was a pioneering female author in a predominantly male-dominated genre. Her background in law and interest in criminal psychology undoubtedly influenced her writing, allowing her to create intricate plots and well-developed characters. 'The Millionaire Baby' is a must-read for fans of classic detective fiction, as well as anyone who enjoys a well-crafted mystery filled with twists and turns.