Captain Scarlet and the Mysterons S01E12 - Lunarville 7

The commanding controller of Lunarville 7 on the moon, announces that he has made direct contact with the force, and agreed to a undisturbed, and peaceful settlement, and to finally end the war of nerves. However this is a trick by the Mysterons, as the controller and his personnel aid are reconstructed agents, and have Captain Scarlet, Captain Blue and Lieutenant Green trapped on the compound when they are sent to investigate how he managed to make a deal with the Mysterons.
When suspecting that the controller and his right hand man could be Mysteron agents, they leave Lunarville 7, and travel to the Humboldt Sea on the far side of the Moon, where an enormous and potentially powerful Mysteron complex is being developed and built in Crater 101.