A doubtful Julie lets Mary baby-sit Erica, only if Mary has no visitors. But when Frankie (Chyler Leigh) comes by and begs Mary to take care of Mercy, Mary can't resist helping her. Meanwhile, Lucy volunteers to chaperone Ruthie's sleepover and watch the twins; Simon is on a quest to change his image; and Matt pursues a woman who wants nothing to do with him. Johnny: Nathan West. Julie: Deborah Raffin. Hank: Ed Begley Jr. Mary: Jessica Biel. Eric: Stephen Collins. Annie: Catherine Hicks.