Harley Quinn joins forces with a singer, an assassin and a police detective to help a young girl who had a hit placed on her after she stole a rare diamond from a crime lord.
- Genre: Action, Crime
- Studio: Warner Bros. Pictures, LuckyChap Entertainment, Clubhouse Pictures, Kroll & Co Entertainment, DC Films
- Keyword: nightclub, pickpocket, chase, gang leader, police, psychopath, vigilante, joker, based on comic, betrayal, organized crime, shootout, female protagonist, mobster, breaking the fourth wall, orphan, criminal, police officer, police detective, spin off, hyena, held at gunpoint, henchman, exploding body, death of family, crime family, female police officer, nightclub owner, crime lord, woman director, hand to hand combat, vigilantism, suspended cop, murder of family, dc extended universe, dumped by boyfriend, loss of family, supernatural power, vigilantes, shared universe, betrayal of trust, gotham city, vigilante justice, jailbreak, animated sequence, suspended from job
- Cast: Margot Robbie, Ewan McGregor, Mary Elizabeth Winstead, Jurnee Smollett, Rosie Perez, Chris Messina