Carnival of Monsters - Episode 3

This story would clearly have been better served as a 3-parter. More running around, with little plot development. The dialogue of the grey aliens is still sharp, notably "One has... twinges" for example. The Drashigs are horribly inserted into studio and locations, and look almost totally unbelievable. The explosions caused by the Doctor's sonic screwdriver are very impressive, however. And what's with the Doctor just abandoning Jo once he's got the rope? Shouldn't he go back for her? Nope, he heads down the rope and out the Scope.