Season 2 Ep.3 - School Reunion

 In This Episode :
 Deffry Vale School, a normal, local high school. But not everything is as it seems. Sarah-Jane Smith decides to investigate the place, with her trusted (yet rusted) robotic dog K-9. But there she unravels a deeper mystery, as she is reunited with a face from her past. The Doctor, who left her behind many years ago, has returned, and everything about him is different from the Doctor that Sarah remembers...

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