Wales, 1959. A top-secret US satellite has mysteriously gone missing. This could have something to do with the arrival of a party of alien tourists en route to Disneyland, amongst their number Mel and the Doctor, and the Queen of the Chimerons - who's fleeing the Bannermen and their genocidal leader Gavrok...
Quest roles:
Don Henderson(Gavrok), Ken Dodd(Tollmaster), Stubby Kaye(Weismuller), Richard Davies(Burton), Keff McCulloch(The Lorells)