The "Lies" story arc runs parallel with and explores Diana's search. No longer able to get into Mount Olympus, Diana tracks down Barbara Ann Minerva, the Cheetah, to get help. Cheetah agrees to help in exchange for Diana aiding her in killing the god Urzkartaga and ending Minerva's curse. The pair battle their way through Urzkartaga's minions, the Bouda, and defeat Andres Cadulo, a worshiper of Urzkartaga that planned to sacrifice Steve Trevor to the plant god. Once reverted to her human form, Minerva agreed to help Wonder Woman find her way back to Paradise Island. During this time, Wonder Woman reconnects with Steve. Minerva eventually realizes Paradise Island is an embodiment of emotion instead of a physical place, so Wonder Woman and Steve head out to find the island. They succeed and Wonder Woman is greeted by her mother and sisters, though Steve senses something is wrong. Wonder Woman comes to realize nothing is as she remembers and, upon using the Lasso of Truth, discovers everything she thought she knew was a lie: she never really returned to Themyscira after departing with Steve years earlier. The revelation shatters Diana's mind and she is left nearly insane. Veronica Cale, a businesswoman who has been desiring to find Themyscira and the leader of Godwatch, sends a military group called Poison after her, but Diana's state has left her vulnerable and oblivious to the danger she and Steve are in. Steve wards them off long enough for them to be rescued, and reluctantly places Diana in a mental hospital so she can get help. While there she comes to grasp the reality she thought she knew was false, eventually coming out of her stupor and able to rejoin the others in tracking down Veronica Cale, who is trying to find Themyscira.
With Wonder Woman arriving in pursuit, Strife warned of the prophecy Apollo and Artemis feared: a child of Zeus would kill a god to take the throne. That child could be either Diana or Zola's child. Sending Zola back with Hermes to have her baby in peace, Diana warned that if they were not left alone, she would fulfil the prophecy herself. Unfortunately, upon her return to Michigan, Diana found that Hermes had betrayed them, and once Zola gave birth to her son, he whisked the child away, and gave it to Demeter. Diana swore to get the boy back and bring Hermes to justice.
Shortly after the team assembled, Wonder Woman assisted in helping a newly resurrected Superman regain his memories. With the team now fully assembled, Wonder Woman contributed to the successful offensive against Steppenwolf, forcing the alien invasion into retreat. Afterwards, she began to plan for the Justice League's future alongside Bruce Wayne.
Originally signed for three feature films, with Wonder Woman and Justice League being her second and third films, Gadot signed an extension to her contract for additional films. Jenkins initially signed for only one film, but in an interview with Variety, Geoff Johns revealed that he and Jenkins were writing the treatment for a Wonder Woman sequel and that he has a "cool idea for the second one". At the 2017 San Diego Comic Con, Warner Bros. officially announced a sequel would be released on December 13, 2019, and would be titled Wonder Woman 2; the date was later moved up to November 1, 2019, to avoid competition with Star Wars: The Rise of Skywalker. Later, Jenkins was officially signed to return as director, with confirmation that Gadot will be returning as the titular role. Days later, the studio hired Dave Callaham to co-write the film's script with Jenkins and Johns. On March 9, 2018, Kristen Wiig was confirmed to play Cheetah, the villain of the film. Later that month, it was announced that Pedro Pascal would have a key role in the film. In May 2018, long-time DCEU producer Zack Snyder confirmed on social media platform Vero that he, along with wife Deborah Snyder, will serve as producers on the Wonder Woman sequel. In June 2018, the title of the film was announced to be Wonder Woman 1984. A third film was announced in January 2019 to be taking place in the present.
In one episode, a newspaper editor named Brown, desperate to discover Wonder Woman’s past, assigns a team of reporters to chase her down; she easily escapes them. Brown, gone half mad, is committed to a hospital. Wonder Woman disguises herself as a nurse and brings him a scroll. “This parchment seems to be the history of that girl you call ‘Wonder Woman’!” she tells him. “A strange, veiled woman left it with me.” Brown leaps out of bed and races back to the city desk, where he cries out, parchment in hand, “Stop the presses! I’ve got the history of Wonder Woman!” But Wonder Woman’s secret history isn’t written on parchment. Instead, it lies buried in boxes and cabinets and drawers, in thousands of documents, housed in libraries, archives and collections spread all over the United States, including the private papers of creator Marston—papers that, before I saw them, had never before been seen by anyone outside of Marston’s family.