Kayla Madison

Damon realizes Elena is in danger and enlists Stefan’s help to find her. The brothers pay a visit to Aaron, and Damon shocks Stefan by revealing his first-hand knowledge of Aaron’s family. In an attempt to stop Damon, Dr. Wes unleashes his secret weapon, forcing Damon to deal with a part of his past he thought was gone forever, as well as the consequences of his decades-long plan for revenge. Meanwhile, Elena is horrified by Dr. Wes’ confessions about the dark history of Whitmore College and his own ultimate goal. Finally, a frantic Katherine turns to Matt for help, until she realizes that Nadia may be the one who can solve her problem.

The remains of an escaped convict are found in a residential sewer, but an examination of the sewer pipes indicates that the murder occurred within prison walls. Brennan insists on solving the crime – despite Booth’s pleas for her not to overexert herself – and the expectant couple experiences a very untraditional arrival of their baby daughter.

After making some extra money from the diaper business, Mike surprises a rather unenthusiastic Heck family with a Spring Break vacation at Mammoth Cave, Kentucky. In the hopes of livening up what is perceived to be a lame vacation, Frankie suggests that the Donahues join them. While Mike visits all of the attractions on his own, Nancy asks a not-so-thrilled Frankie to speak with Sean to try and talk him into taking his MCATs; Axl enlists Brick to help him pick up women by playing "Jerk / No Jerk" — with Brick in the role of the Jerk; and Mike is anything but excited when an exuberant Sue reveals some news to him about her upcoming summer plans.

Frankie has come to the conclusion that April is not good enough for Axl and does everything in her power to keep her out of their annual Christmas family photo. But she finds herself vying for Axl's attention by trying to rearrange timing for the family's Thanksgiving dinner when she discovers that he plans to go to April's multiple family get-togethers that day. Meanwhile, Sue goes ballistic when she discovers that Brick will now be her new co-worker at Spudsy's.

Meredith dreams of what her life would have been if her mother had been healthy.