7th Heaven: Don't Speak Ill of the Dead or the Living

Annie's half-sister, Lily, shows up to talk to Annie about a serious family issue, but Eric wonders why Annie is so reluctant to deal with her. Peter and Ruthie land in some trouble over a class project, while Cecilia tries to send Tyler's awkward friend, Mac, on a date with a classmate. Meanwhile, Chandler helps advise Roxanne during a personal crisis.