Olive Byrne met Marston in 1925, when she was a senior at Tufts; he was her psychology professor. Marston was already married, to a lawyer named Elizabeth Holloway. When Marston and Byrne fell in love, he gave Holloway a choice: either Byrne could live with them, or he would leave her. Byrne moved in. Between 1928 and 1933, each woman bore two children; they lived together as a family. Holloway went to work; Byrne stayed home and raised the children. They told census-takers and anyone else who asked that Byrne was Marston’s widowed sister-in-law. “Tolerant people are the happiest,” Marston wrote in a magazine essay in 1939, so “why not get rid of costly prejudices that hold you back?” He listed the “Six Most Common Types of Prejudice.” Eliminating prejudice number six—“Prejudice against unconventional people and non-conformists”—meant the most to him. Byrne’s sons didn’t find out that Marston was their father until 1963—when Holloway finally admitted it—and only after she extracted a promise that no one would raise the subject ever again.
Development of a live action Wonder Woman film began in 1996, with Ivan Reitman slated to produce and possibly direct. The project floundered in development hell for many years; Jon Cohen, Todd Alcott, and Joss Whedon, among others, were also attached to the project at various points. Warner Bros. announced the film in 2010 and Jenkins signed on to direct in 2015. Inspiration for Wonder Woman was drawn from Wonder Woman creator William Moulton Marston's 1940s stories and George Pérez's 1980s stories about Wonder Woman, as well as the New 52 incarnation of the character. Principal photography began on November 21, 2015, with filming taking place in the United Kingdom, France, and Italy before finishing on May 6, 2016, the 123rd anniversary of Marston's birth. Additional filming took place in November 2016.
In May 2017, early tracking had Wonder Woman opening with $65–75 million, and possibly as high as $105 million. The film opened Friday, June 2, 2017, across 4,165 theaters and made $38.7 million on its opening day, including $3.7 million in IMAX. It was the biggest single-day gross for a woman-directed film, ahead of the $35.9 million opening Friday of Catherine Hardwicke's Twilight in 2008 and the biggest opening day for a woman-led comic book superhero film, ahead of Ghost in the Shell ($7 million). This included $11 million it made from Thursday previews, also the best start for a film directed by a woman, surpassing Fifty Shades of Grey's $8.6 million which was directed by Sam Taylor-Johnson, and the third-biggest of the year, behind Beauty and the Beast and Guardians of the Galaxy Vol. 2. Of that, $1.5 million came from IMAX screenings.