When Rebekah finds herself locked up in the sanatorium where she worked in 1919, she realizes a witch named Genevieve is back to seek revenge and to reveal dark secrets that would destroy Rebekah if exposed. A distraught Elijah turns to Marcel and Hayley for help when one of his decisions puts Klaus and Rebekah's lives in danger. With time working against them, Marcel realizes he may hold valuable information that could lead them to Rebekah and Klaus, but revealing it will almost certainly result in deadly consequences.

Despite Klaus' rage, Elijah is determined to protect Rebekah while the three of them are trapped in the City of the Dead cemetery by a witch's boundary spell. Klaus and Rebekah trade bitter accusations until Elijah steps in to reveal a long-held secret from the family's past. Meanwhile, Marcel races to free Rebekah, ultimately finding himself forced to make a deal with Genevieve. Finally, Rebekah and Hayley connect over their shared concern for Hayley's unborn baby.