The Manhood of Edward Robinson — Agatha Christie

Sane and sensible Edward Robinson secretly dreams of fast cars, adventurous women, and danger, but his fiancée, Maud, keeps him grounded in reality. When Edward wins money in a newspaper competition, he immediately buys the sleek red car of his dreams â€" without telling Maud. Adventure swiftly ensues, as he is embroiled in high society scandals that lead him to a significant transformation.