While Marston’s feminist superhero was criticized by censors for her ‘sexual perversity’, he was keeping a secret that could have destroyed him. Marston’s muses for the Wonder Woman character were his wife Elizabeth Marston and their lover Olive Byrne, two empowered women who defied convention: working with Marston on human behavior research — while building a polyamorous hidden life with him that rivaled the greatest of superhero disguises.