Dee is not impressed that Katy is sending Mack on an errand on the day they are due to attend an antenatal class. Her hackles are further raised when Katy seems to know more about her husband that she does. An angry Dee lets herself in to Katy's house but to her horror Mack and Katy enter. Will Dee get caught? Berni is struggling with Jude's deterioration, but is reluctant to disclose to others that her mother has Alzheimer's. Briain is left with little choice but to cover for Berni.