Sarah tells Eric that Kathy has gone away for the weekend with Graham and he panics for her safety. Graham believes that Kathy has given his life a whole new purpose and wants her to move away with him. She assures him that she isn't ready to commit, and they depart on bad terms. Marlon comes to Eric's beck and calls as they begin to dig deep for information on where Kathy's gone. They interrogate Roy, who doesn't know. Eric decides that they have to break into Mill Cottage. Kathy begins packing her things to go home. Graham pleads with her to stay and locks the bedroom door behind him. The two partners in crime manage to break into Mill Cottage and find a holiday brochure for the place where Kathy and Graham are staying. The first seeds of doubt are planted in Kathy's mind when Graham tells her that Eric and Marlon blame him for Rachel's death (thetvdb.com)