 Clea tried to anonymously buy a submarine from Steve Trevor to return to Atlantis (why she needed a sub is unclear, possibly she wanted the weaponry onboard), but Trevor recognised her and played along to capture her.He was knocked out by Giganta, and Clea and her aide decided to capture the Holliday Girls and maybe Wonder Woman to force him to give them a submarine.This sort of worked, and they forced Wonder Woman to steal a US Navy sub for them - but Clea and Giganta were recaptured before their sub could fully dive, and reimprisoned by the Amazons.