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.
Jane defends a supermodel against charges that she murdered her con man husband; a pro bono case for an elderly woman who's fighting a real estate developer exposes differences between Grayson and Kim.
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.