It is quite difficult to write an adequate review for this particular adventure, considering that it is a wonderful adventure, but the TARDIS crew are constantly moving from one place to another within the confines of these 6 episodes. But it is definitely a very ambitious quest type of adventure, with the Doctor and company being blackmailed into helping Arbitan retrieve the four micro circuit keys that would reactivate the Conscience of Marinus, in order to stop a group of alien terrorists, the Voords, from subjegating the planetary populace with the machine. Their first stop takes them to Morphiton, a place where people seem to be the most friendly and content in the universe. But it is soon revealed to be a charade, as it is clear that strange disembodied brains have subjegated the people into slavery. But soon they are defeated, retrieve the key and are joined up with Altoss and Sabetha, a young couple that were on the same quest, but came under the influence of the powerful brain creatures. Their travels take them to a living jungle, and to an artic landscape, then to the city of Millenius, where their laws are that a person is guilty until proven innocent, not the other way around. And soon Ian is framed for a crime of murder and theft, in which the good Doctor comes to his aid to solve the mystery, in true detective like style. I like this particular portion as it displays a brief courtroom drama type scenario, which is always a good thing. Finally, their adventure brings them back to the island, where they find Arbitan dead, and the Voords in charge. But they soon trick the creatures into destroying the machine that would have allowed them to conquer Marinus, just before the Doctor and company travel on to their next adventure. I definitely recommend this to any and all Dr. Who fans.