Mouse in Me Kitchen Rex the Runt : Season 2 Episode 1

Upon returning home, Rex finds that his kitchen has been overtaken by a mouse. Despite the best efforts of Bob and Wendy's boxing friend, they fail to overcome him. He tells them that he is Rex's long lost abandoned mouse, and subsequently is squashed by Vince's elaborately planned mechanism. Rex realises that the mouse is an imposter, and they celebrate his death.