Doomsday has been set in motion, but a far worse fate will follow... When a group of intrepid explorers uses pioneering technology to cross space and investigate new worlds light years away, Earth is gripped by a huge sense of excitement. But as the years pass without a single communication, the interest dies away. No one knows what has become of the expedition. Many years later, long after catastrophe has rocked the planet, sixteen-year-old Tara and her friends enjoy a simple way of life on what is left of Earth, salvaging, fishing and farming to survive. When the radio on their boat Molly picks up a mysterious signal from the underwater remains of the city once known as Seattle, curiosity gets the better of them. But their investigation eventually leads them to uncover the terrible truth behind the cataclysmic events that destroyed the way of life of their parents and grandparents. However, this discovery is only the tip of the iceberg. For a new threat is approaching, and this time, the very existence of the Human race is in peril. The Signal is the first in the thrilling new series Sabotage, from the pen of Topher Kaler, author of the YA Sci-Fi series Serendipity. Mixing intrigue and adventure with a fascinating glimpse into the mysteries of space, it joins Tara and her friends as they set out on a quest that will take them beyond their wildest dreams.