Pertwee shines in a his farewell serial as he faces off against a spider senate and runs over vagabonds with a hovercraft
The Brigadier and the Doctor are taking in a harmless burlesque show, all with the guise to study ESP, when former companion Jo Grant sends the blue crystal from Metebelis III to U.N.I.T. headquarters, setting off a chain of absurd events that could jeopardise all of humanity.
Meanwhile in Berkshire, a series of coincidences sees the former Captain Yates, The Doctor’s old Time Lord teacher and an invading force of sentient, psychokinetic outer-space spiders, aka The Eight Legs, convene at a Tibetan monastery.
And in case you’d forgotten, here’s a comparison shot with the beetle backpack in Turn Left…