The novel “Forbidden Planet” by W.J. Stuart was published for the first time in 1956.

A spaceship commanded by John J. Adams approaches the planet Altair-4. The mission is to establish the fate of a previous expedition that reached the same planet about twenty years earlier. However, in a radio contact, Professor Morbius tries to convince Adams to turn back because a grave danger awaits the crew on the planet.

Adams is not convinced and lands his spaceship in the area near ​​Professor Morbius’ radio transmitter. While he’s carrying out the first environmental assessments with his crew, Adams is reached by a vehicle driven by a robot that invites them to meet Morbius. A small group goes to meet Morbius and discovers that he has a daughter, Altaira. They’re the only survivors of the first expedition, but the man seems very reticent to explain the details of what happened and the nature of the danger.

The novel “Judas Unchained” by Peter F. Hamilton was published for the first time in 2004. It’s the second book in the Commonwealth Saga and follows “Pandora’s Star”.

The Primes’ attack has caused a crisis in the InterSolar Commonwealth. The planets devastated by the aliens are the most obvious problem, but there are long-term consequences to be assessed. The priority is to stop further invasions of planets colonized by humans, but it’s necessary to find a way to defeat them as well.

While Ozzie Isaac continues his quest for answers, someone in the Commonwealth starts believing that there may be something real behind the story of the Starflyer. The war seems to have a chance to end only with the genocide of one of the two species involved.