Hulbert Footner's novel, 'The Substitute Millionaire,' delves into the complex themes of identity, deception, and the pursuit of wealth. Set against the backdrop of early 20th century New York City, Footner's descriptive prose captures the essence of the era's societal norms and values, making the reader feel truly immersed in the time period. The story follows the protagonist as he navigates a web of lies and manipulation in order to secure his inheritance, leading to a thrilling and unexpected resolution. Footner's engaging plot twists and vivid characterizations provide a gripping reading experience. The novel can be considered a prime example of early American mystery fiction, blending elements of suspense and intrigue with social commentary. Readers interested in exploring the dynamics of class and ambition in a historical context will find 'The Substitute Millionaire' to be a compelling and thought-provoking read, showcasing Footner's skill as a storyteller and keen observer of human nature.