It is Alfie's big night as he prepares to switch on Walford's Christmas lights. Yet with his paranoia about Kat escalating, he turns to Michael for advice - only for Michael to drop a bombshell about Kat's affair. Derek does his best to manipulate Tanya to get what he wants, knowing that she needs to keep him onside for Lauren's sake. Meanwhile, Sharon struggles with her demons the day before Lexi's court hearing. (thetvdb.com)