For eons, the truth about human evolution has remained hidden.Until now...Extinction CodeGeophysicist Jack Greer believes he may finally have found the resting place of the meteorite that wiped out the dinosaurs sixty-five million years ago. A few miles off the Yucatan coast, Jack and a team of scientists tow an aging drilling platform over the impact crater with the aim of securing a sample. But buried deep beneath the earth lies a shocking discovery that threatens to shatter everything we think we know about our species.A world away, geneticist Dr. Mia Ward receives a mysterious delivery from her former boss and mentor, Alan Salzburg. In it are clues of a dire warning hidden inside the human genome, one which foretells man's very extinction.His instructions to Mia are simple: keep the information safe and, above all, trust no one - words all the more chilling after Alan turns up dead. But who wrote the message and what does it mean? Only Jack Greer holds the answers, but can she reach him in time to save the human race?Extinction CountdownDr. Jack Greer's startling discovery beneath the Gulf of Mexico proved to the world we were not alone in the universe. But when images from the Voyager One space probe reveal an alien doomsday ship hurtling toward the Earth, the human race seems marked for extinction.As news of the approaching ship spreads panic around the globe, signs of a sinister plot begin to emerge - one that threatens to unravel the already fragile fabric of society and everything Jack and Dr. Mia Ward have fought for.But could a mysterious signal emanating from inside Greenland's ice sheet unlock the secrets hidden within our genome and prevent humanity's destruction?From the frozen fields of Greenland to the bustling Indian subcontinent and the cobbled streets of Rome, the race is on to stop the deadliest countdown to extinction the human race has ever known.Extinction CrisisWith the doomsday ship only days away from impacting the Earth, humanity's demise seems all but assured. In every corner of the world, news of the impending destruction has led to chaos, looting and the collapse of the rule of law.As the foundations of civilization crumble around them, Jack and Mia must race to find answers to perhaps the most important questions of all time. Why have the Ateans repeatedly eradicated life on our planet? And could the key to ending the cycle of extinctions be locked somewhere within the Salzburg Chromosome?Unraveling the mystery will mean journeying deep into the heart of a perilous alien world and facing off against the very beings who created us.