Books by Mark Walden

The thrilling conclusion to the outstanding Earthfall trilogy for sci-fi fans everywhere. Can Earth be reclaimed?The battle for Earth continues. In order to defeat the Voidborn, the alien race that invaded Earth, Sam must come to terms with the Illuminate powers he has inherited and return to London. The only hope he has for defeating the aliens is to enlist the help of not only his friends, but also what he fears most. Sam and his friends must find a way to awaken the sleeping Illuminate far beneath the surface of the Earth, but what they don't realise is a dark and terrible secret is also about to be uncovered. A secret that may spell doom for all of humanity. One thing is certain, whatever happens, life will never be the same for Sam ever again. And he will be forced to confront the reality that he may have to pay the ultimate price or finally watch the Earth fall.

Sam wakes to see strange vessels gathered in the skies around London. As he stares up, people stream past, walking silently towards the enormous ships which emit a persistent noise. Only Sam seems immune to the signal.Six months later, Sam is absolutely alone. Injured by one of the flying drones which now populate London, Sam realises that without medical supplies he will die. Venturing above ground he is attacked again, but this time the drone is shot down in a hail of machine gun fire. In five minutes Sam learns two things: he is not alone; the drone injury should have killed him instantly - yet he is still alive. The battle for Earth is about to begin.

It's been several months since the events of Earthfall, yet Sam's attempts to rouse the enslaved people of London from their trance-like state have frustratingly failed. Worse still, the enormous Voidborn drilling device which Sam and his friends disabled in London was one of hundreds scattered across the planet, all nearing the final stages of construction.Joining up with another resistance group, they plot to disable a drilling machine in Tokyo and in the process implant viral commands that will cause a catastrophic failure of the entire network. Just as that mission appears to have been successful, Sam and the others are double-crossed by the resistance leader.Earthfall: Retribution will take the series on to a global stage, as the true scale of the conflict being played out on Earth is revealed.