Josué Gutierrez

As she faces a new crisis, Katherine remembers the traumatic night in 1490 when she gave birth to the daughter who was immediately taken from her. Stefan lets Elena, Caroline and Bonnie know that Katherine’s health has taken a turn for the worse, while Damon, Matt and Jeremy discuss some of Katherine’s most notorious moments. Nadia (recurring guest star Olga Fonda) comes up with a frightening plan to protect her mother, and Stefan and Elena are forced to help her. Meanwhile, Caroline is mortified when she realizes she forgot to fill Elena in on the latest shocking gossip, then indulges in a little scandalous behavior of her own. Finally, Elena and Katherine share an unexpected moment of connection.

Deb is only 24 but faces Jane's looming 32nd birthday; Kim and Greyson defend a man who created a Web site for married couples to cheat.

Exit Strategy. When the mutants devise a plan to take down Sentinel Services, Eclipse seeks out an old friend from his dark past in order to obtain some useful information.

The LAPD looks to arrest Mac when they find a body in a building destroyed by a bomb he built.