Under the Mistletoe (S02E15)
Billy successfully slips out of Amanda's apartment without being noticed. Alison approaches him, hoping to mend their relationship, but he declines her offer. Meanwhile, Matt assures Nikki that he'll throw a Christmas party. While searching for a tree for the courtyard, Billy and Jake unexpectedly run into Jo and Alison. Billy attempts to book a flight home for Christmas but is unsuccessful. Instead, he steps in as Santa at Nikki's party. Later, Alison catches him sneaking a gift into her stocking, leading to apologies and a rekindling of their romance. A new nurse causes Michael to reconsider his actions, prompting him to apologize to Jane and Robert. Sydney decides to confess and gives up her life as a hooker, while Nikki heads back to Russia.