We watch the concluding episodes of classic serial “Spearhead From Space” where the third Doctor and soon-to-be-companion-Liz-Shaw (no relation to Tim Shaw) battle space tentacles (?) attempting to take over the earth. Whilst said Plan 9 From Outer Space is occurring, the Doctor continues wearing another man’s dirty clothes, Liz continues proving she’s the Doctor’s intellectual equal (oh the horror), and the Brigadier is just damn cool.