Season 3: Episode 48: The Invasion
When Ray's house is tented for termites, he moves his entire family into his parent's house and gives Frank and Marie a taste of their own medicine. Marie's initial excitement that "Raymond has come home!" quickly fades when the world's greatest home intruders start to feel intruded upon. Sensing her in-laws' growing frustration with the disturbance of their daily routine, Debra decides to have a little fun at their expense and help them like they always claim to be helping her--until she and Ray realize that once again, they just can't win the game.