David Ogden Stiers plays a visitor from Martin's wife's past whose tastes and manners suggest to Roz he could be Niles and Frasier's real dad. The prospect ruffles Martin, who is uncomfortable with the Crane brothers' affinity for their guest.

Greener pastures at another station lure Roz, who's also green with jealousy over Frasier's affection for Julia. Also: Daphne's mom prepares to move out at the behest of her daughter and son-in-law.