Mary meets a wild girl, Camille (guest-star Keri Russell, ""Felicity"") in detention who convinces her to sneak out of her house to attend a fraternity party with her. Although, the party turns out to be an intimate double date with a driver who's been drinking all night. Lucy, now at age thirteen, must officially choose her religion and faith---to the pressure of Eric on her back. Meanwhile, Eric and Annie counsel a former associate pastor of Eric's who is burdened with a secret of his own. Also, Simon and Ruthie secretly buy ferrets and sneak them into the house.