The McCarthy family is reluctant to celebrate Gerard and Katrina's engagement, but when Gerard gets on the wrong Boston Harbor Cruise ship, Marjorie is forced to bond with her soon-to-be daughter-in-law. Meanwhile, Sean hits it off with Katrina's mother, and Arthur judges Jackie for how her baby was conceived.
Elenco: Jack McGee , Jimmy Dunn , Joey McIntyre , Kelen Coleman , Laurie Metcalf , Tyler Ritter .