Annie is actually one of two twins ( Annie and Bonnie ), working together to trap their targets.
The narrative is a "dark fairytale" structure heavily influenced by Alice in Wonderland . Annie manipulates the other characters to eliminate competition and gain the favor of the unseen . She pits the two assassins against each other while simultaneously "counseling" Bill through his existential crisis. The Twist Ending Terminal (2018)
The climax reveals that the story is a meticulously planned revenge mission: Annie is actually one of two twins (