Dax Griffin

Matt and Caroline are surprised by the sudden reappearance of Matt's mother, Kelly. Alaric discovers shocking secrets from his own past. With help from Jenna and Stefan, Elena is determined to find out everything she can about her birth mother.

Serenity's engine explodes, draining its oxygen supply and sending Mal into a delirious state of flashbacks about how he came to own the ship and form his crew.

Haley receives news of a possible tragedy and Dan's search for Nathan leads him back to his dark past. Meanwhile, Clay has a breakthrough with his treatment, Brooke and Julian deal with Xavier, and Chase's concern for Chuck pushes him to his limits.