Mayberry R.F.D. is an American television series produced as a spin-off and direct continuation of The Andy Griffith Show. When star Andy Griffith decided to leave his series, most of the supporting characters returned for the new program, which ran for three seasons (78 episodes) on the CBS Television Network from 1968–1971. During the final season of The Andy Griffith Show, widower farmer Sam Jones (Ken Berry) and his young son Mike (Buddy Foster) are introduced and gradually become the show's focus. Sheriff Andy Taylor takes a backseat in the storylines, establishing the sequel series.