Intro: The Doctor and his companions return to Earth expecting to find an uninhabited planet and are surprised to find other beings about, engaged in "The Sontaran Experiment."

Outro: Next week, The Time Lords send The Doctor on a life or death mission to overthrow Davros, the great Kaled scientist and creator of the dreaded species. Be with us next Sunday evening at 11 and witness the "Genesis of the Daleks." [source: ChicagoEpguides]