Preview:Sonny turns his back on his enemy. Recap:Luke plotted to steal the diamond back from Helena. Luke deduced that Helena would stash the diamond someplace very far away. Roy tried to help Luke formulate a plan and reminded him that he would need a partner. Luke was ecstatic to hear that Roy was joining in the adventure. Gia let it slip in front of Emily that she and Nikolas were living together. Nikolas got an emergency call from Ned and Alexis that they needed his and Emily's help. Ned's plan was that he and Alexis would switch identities with Nikolas and Emily. Alexis and Ned changed clothes with the teens and took off. Tammy asked Carly to help her get to Mike. By invoking Sonny's name, Tammy got to Carly and she agreed to take Tammy to Mike. Mike yelled at Carly for bringing Tammy to him, but in the end, he was glad to see her. Tammy later thanked Carly for taking her to Mike. While they talked, Michael slipped out of Kelly's. Liz showed Lucky the vacant room at Kelly's and he