Pat is furious to spot Derek asking Liam to steal scrap metal for him, and sends the youngster home. Michael realises they have a common enemy, and offers to help her get Derek out of Walford for good - but when the ex-convict realises what they are up to, he visits Pat to remind her how ruthless he can be. Meanwhile, Shirley is unsure whether to tell Phil that she knows who has been tormenting him