CBS

Season 9: Episode 18 - The War Against Gingivitis

The War Against Gingivitis: We meet Walden’s ex-business partner, Billy Stanhope, who comes to Walden with a new business venture. Alan tries to fit in but he clearly has no idea what they are talking about. A lonely Alan ends up at Berta’s house and she has him deliver a questionable package for her on his way home.