TWO STORIES IN A SINGLE VOLUMECybernetic TyrantMark and the team have returned from deep space and discover that NASA seems to be run by robots. They are met by one in Earth orbit which refuses to allow them to communicate with Houston and also has locked the visiting scientists from Herade in the passenger compartment. The robots have assumed that the aliens are animals and stop all communication between the two species. Finally, Mark, Anna, Bill, Chan and Mary are shipped back to Earth, but the reception they receive is totally unexpected and frightening. What has happened to their friends and colleagues while they've been away? Deep Space Visitor - a second adventure.After celebrations to welcome the Heradians, Mark's team are discussing how much help they need to provide to the aliens in order to enable them to occupy their original world in the Trappist-1 system. Development work on the spolding drive has meant that an expedition is also being planned to the pristine Earth that the team had accidentally stumbled upon on the first main Trappist-1 expedition. Just when they begin discussing the plan, Anna, NASA's chief pilot, walks into the meeting and announces more information on a vague signal being received from deep in the solar system between the orbits of Saturn and Uranus. What is it, and why does it lead to a spolding expedition to Nu Lupi, almost fifty light years from Earth? REVIEW OF SERIES SO FAR: "This is a great hard sci fi series. If you like space travel and encounters with alien life forms, you will love this series. Very imaginative in the story telling. Very imaginative in the alien encounters."