Preview:Luke says a final goodbye to Stavros. Recap:Felicia barged into Mac's office and told him that several of their friends were missing and she suspected Helena of capturing them in the lab. She told Mac that she knew how to get there, but he initially refused to let her go because of the great danger. Felicia reminded him that she would simply follow behind and he relented. Kristina opened Alexis' box of mementos and showed him the souvenirs from her childhood that Alexis had saved. Ned was stunned that Alexis had never shown him any of the things, but Kristina declared that the memories were probably too painful to share. Kristina cried as she wondered whether she would have a chance to make new memories with her sister. Ned held her and assured her that she would have that chance. Skye covered for Janine when Edward almost caught on to their scam. She assured her grandfather that Janine simply didn't want him to know how much he had hurt her. Skye motioned behind his back for