In the first, season 5's "A Drinking Problem," Willis moves out of the penthouse to live with Jerry (Lawrence Monoson) who abuses alcohol. In the second, season 7's "Cheers to Arnold," Arnold must deal with Ricky (Robert Jayne), a classmate whom he catches drinking a thermos of alcohol in the school bathroom. In the final season (when the sitcom moved from NBC to ABC), the one-hour season opener ("Sam's Missing") revolved around Sam being kidnapped by Donald Brown (Royce D. Applegate), a bereaved father hoping to replace his own dead son, Tommy. In other notable episodes, such as season 8's "Bulimia," the family discovered that Kimberly was suffering from bulimia. In another episode, season 7's "A Special Friend," Arnold and Sam met Karen, a street performer. After a performance, she has an epileptic seizure and Sam thinks she's dying. The boys then feel uncomfortable around her and when they begin making jokes about her seizures, they find out that housekeeper Pearl herself has epilepsy but, unlike Karen, controls her seizures by taking medication. "The Facts of Life" (1979-1988) is a spin-off of "Diff'rent Strokes" featuring Drummond's former maid Mrs. Garrett, who had accepted a job as the housemother for a dormitory at Eastland, an all-girls private school that Kimberly was attending. In a late first-season episode of "Strokes" ("The Girls School," which served as the "backdoor pilot" of "Facts"), Mrs. Garrett took Kimberly to the school with the intent of helping her sew costumes for a school play. While there, Mrs. Garrett met Kimberly's classmates and was offered the job as "dorm mother." She declines in this episode, but come fall, clearly had a change of heart. The "Diff'rent Strokes" cast appeared in the first episode of "The Facts of Life" (at one point, Drummond asks Mrs. Garrett "Are you sure we can't change your mind to come back to us?"). The success of the spin-off led to several "Strokes"/"Facts" crossovers in the ensuing years. While not a spin-off, "Hello, Larry" (1979-1980) had a connection to "Strokes" as it was established in a crossover episode that Philip Drummond and Larry Alder (McLean Stevenson) were old Army buddies and Mr. Drummond had bought the company that owned the radio station where Larry worked as a talk show host.