Brown creates a theory that if they can use the gravity pull of the Sun to get home. Some time after setting off, the crew all slowly succumb to gamma rays from the Sun one-by-one. By a miracle, there is a total eclipse and Mercury shuts of the rays from the Sun but they quickly find themselves being pulled into Mercury's gravity pull. The crew then realise that Buchan Island has made various satellite fixes on Mercury, thus enabling MR4 to make the home journey to Earth. As MR4 falls out of danger from the Sun's gamma rays, Brown ponders of the idea of other life on another planet and sees Venus as a possibility... Pathfinders to Venus Number of episodes: 8 S.O.S From Venus Into the Poison Cloud The Living Planet The Creature The Venus People The City The Valley of the Monsters Planet on Fire Synopsis Returning from their unexpected trip to Mars the crew of MR4 intercept a distress signal from Captain Wilson, a U.S astronaut, and must change course for Venus to attempt a rescue in space. However, through the space periscope, Brown sees what appears to be a settlement or a city of some sort. Desperate to investigate, Brown edits Wilson's message and tricks the crew into landing Venus so as they can rescue him. Landing on Venus, the crew discover, much to Brown's delight, that the planet is capable is sustaining life and is a vast jungle. Investigating further, the party find Wilson's rocket-capsule, the US V7, ransacked and ripped apart from the inside by something. Brown gets separated from the others and finds Wilson, who then tricks him into finding his 'city'. Henderson, Meadows, Geoff and Margret find the trail leading into the caves of the volcano and get separated. Whilst separated, Henderson, Geoff and Meadows find cavemen whilst Margret (and Hamlet) finds Wilson, Brown and a Venusian cave-child whom she names 'Kiki'. Reunited, the group are forced to escape the lava flow and find themselves in a desert. Keeping to the left and through the desert, the Wedgwood party discover Venus is a living duplicate of Earth, with dinosaurs and prehistoric humans existing parallel to each other. As the journey progresses they discover diamonds and uranium deposits. When they get nearer Brown's city, they find it to be nothing but an ancient burial ground for Kiki's ancestors. Finally returning to the jungle,