I roto i te 1973, Doctor Ko wai te kaiwhakaari Katy Manning, i te tākaro i te Kaiawhina o te Tuatoru Doctor Jo Grant te ritenga o Jon Pertwee, i mahue i te raupapa; Z-Cars kaiwhakanao Ron Craddock hoatu Sladen he tūtohu hihiri ki Doctor Ko te kaiwhakanao Barry Letts. tae Sladen i te whakamātautau kore e mohio ko reira mo te tūranga hoa hou, a ka miharo i te tino o Letts. i whakaurua ia ki a Pertwee, nei i kitea e ia whakawehi i te wa. rite korerorero ia ki Letts ko Pertwee, ia wa tahuri ia ki te titiro ki tetahi o ratou i te tahi atu e tohu i te maihao. i te tuatahi i hoatu te tūranga o Sarah Jane Smith ki komeke April Walker, engari e kiia i roto i te whakamātautau mō te The Time Warrior? ia i runga ake i te whakaaro o Jane Walker me te kaihanga Z-Cars Ron Craddock, a i whakaurua ia Sladen ki a Barry Letts. tae Sladen i te whakamātautau e kore i mohio ko te reira
Ko Sarah Jane Smith