Goodbye Dolly is the sixth episode of Season 1 of Diff'rent Strokes. The episode was written by Albert E. Lewin and directed by Herbert Kenwith. It originally aired on December 8, 1978 on NBC.
After Kimberly donates Arnold's ratty old doll named Homer to charity and it is sold, he can't sleep. Mr. Drummond quickly tires of this, so he hires a detective to try and find the doll.