We were watching the sky. They were already here. The pulse hits without warning In one harrowingly destructive instant, a mysterious seismic pulse in the Scottish Highlands rips away all semblance of global security. Complacency grew in the years since Dan McCarthy brought humanity into contact with intelligent aliens, but those days are gone. When peace is shattered, fear takes over. The stakes rise without mercy As the pulse's chaos spreads, it becomes painfully clear that Dan's teenage daughter Piper—a child born like no other—might hold humanity's only hope of averting total disaster. The danger to Earth is imminent. The danger to Piper McCarthy hardly bears thinking about. And this threat isn’t coming from the stars. This time, it’s been here all along...

The pulses were just the beginning. Desperate times As two worlds reel from a colossal final pulse that cuts off all contact between them, two unimaginable discoveries raise the stakes even further. In a secret American facility, a power hidden from society for a decade is about to break free. And something much bigger, buried deep beneath the Scottish Highlands for thousands of years, is about to rise up. Desperate measures All hope of restoring the gateway to New Kerguelen lies in exploring the mysterious alien vault. But once Pandora's box is opened, there's no going back. The fate of two worlds falls again on Piper McCarthy's young shoulders, but this time her remarkable powers might just be outmatched. The gate is closed. The vault is open. The trouble is just getting started...

The sky falls dark... the endgame is here. Under siege As the relentless approach of a truly gargantuan mothership sparks chaos on Earth, many believe the end times are here. The unknown beings are more technologically advanced than humanity can even comprehend, let alone match. Worst of all, observation makes one thing clear: they aren't coming to chat. United in fear For the first time since Dan McCarthy's initial contact with aliens a full sixteen years earlier, the whole world is united against an existential threat. Humanity has its back against the wall like never before, side by side with two friendly races against odds that hardly bear thinking about. Defiant until the end But while billions understandably cower in fear, a few stand defiant. The gauntlet is thrown down. A showdown is coming. And be it on Earth or in space, the McCarthys will be there... Don't miss Not Alone: Endgame, the epic culmination of the groundbreaking saga!