Humanity's last hope lies within the spacecraft called Galahad.And not one of the passengers is over the age of 16.A rogue comet deposited a virus in Earth's atmosphere that threatens to devastate the entire population. The only solution? Send 251 teenagers to start over by colonizing a new world.But not everyone supports the plan - and not everyone aboard the ship belongs there.Soon, the teen explorers will confront an entirely new catastrophe, a nightmare in space that will either bring them together or destroy them.What reviewers Part space opera, part mystery, the story draws readers in from the beginning with well-placed hooks, plenty of suspense, and a strong premise.School Library JournalWhat began as a fairly straightforward tale of 251 teens shot into space to escape a ravaging disease on Earth became a deeper, broader, scarier, and more intellectually stimulating journey with every book. Few YA SF series in recent memory have been this satisfying.Booklist, Starred reviewGrabs readers' attention with the very first page and never lets go. Both a mystery and an adventure, combining a solid cast of characters with humor, pathos, growing pains, and just a hint of romance.Kirkus Reviews