Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: A cikin 1973, Doctor Wanda 'yar wasan kwaikwayo Katy Manning, wanda ke wasa da Mataimakin Doctor na Uku Jo Grant da ke gaba da Jon Pertwee, yana barin jerin; Z-Cars mai samarwa Ron Craddock ya ba Sladen kyakkyawar shawara ga Doctor Wanda mai samarwa Barry Letts. Sladen ya isa wurin gwajin ba tare da sanin cewa don sabon matsayin abokin tarayya ba ne, kuma ya yi mamakin yadda Letts ya cika. An gabatar da ita ga Pertwee, wanda ta sami tsoratarwa a lokacin. Yayin da take hira da Letts da Pertwee, duk lokacin da ta juya ta kalli ɗayansu ɗayan zai nuna alamar babban yatsa. An ba da rawar Sarah Jane Smith ga 'yar wasan kwaikwayo mai suna April Walker, amma ana zargin cewa a lokacin gwaji don labarin farko na The Time Warrior, shakku game da haɗin Walker da Pertwee sun bayyana kuma an sake jefa bangaren zuwa Sladen. Ta zauna a Doctor Who na tsawon shekaru uku da rabi, tare da Pertwee a matsayin Likita na Uku da Tom Baker a matsayin na Hudu. Ta koma halin Sarah Jane Smith a lokuta da yawa daga baya. A cikin 1981, sabon Doctor Wanda mai shirya John Nathan-Turner ya nemi ta dawo cikin jerin don sauƙaƙe sauyawa tsakanin Tom Baker da sabon Doctor Peter Davison. Ta ƙi amma ta yarda da tayin na biyu na yin matukin jirgi don jerin jerin da ake kira K-9 da Kamfanin, tare da K-9, karen robot daga Doctor Who. Koyaya, ba a ɗauki matukin jirgi don jerin ba. Shekaru biyu bayan haka Sladen ya bayyana a cikin bikin cika shekaru 20 na musamman Likitoci Biyar. Ta sake yin rawar a cikin 1993 Yara a Bukatar Dimensions na musamman a Lokaci, kuma a cikin bidiyon da aka samar da kansa na 1995 Downtime tare da tsohon abokin wasan Nicholas Courtney a matsayin Brigadier Lethbridge-Stewart da Deborah Watling a matsayin Victoria Waterfield. Wannan shi ne bayyanarta ta ƙarshe a kan allo a matsayin Sarah Jane Smith na ɗan lokaci.  Tambaya: A wace shekara ce Katy Manning ta tafi?
Shekara ta 1973