Constantine dressed up as Jack the Ripper and tried to sacrifice himself to give Zari the chance to escape, but Zari awesomely dressed herself up as Cleopatra and stepped up.
The episode ended their story by putting them in very close quarters, and they nearly kissed, which is not something I would have expected last season.
With Zari determined to find a way to bring her brother back to life, she teamed up with Constantine, but their plan was derailed when they faced encores like Jack the Ripper, Brutus (who betrayed Caesar), Henry VIII, and Bonnie and Clyde.