Imagine a stark and sterile world in which humans are the last species standing . . .For the denizens of Daqin Guojin, this horrific thought is a harsh reality. The Cycle of Extinctions has erased Earth's food sources, and life 700 years later harbors little sympathy for the planet's last species. But a doomed boy and girl offer humanity a seed of hope.Daoren and Heqet stand an even chance of celebrating their 20th birthdays. Like every 19-year-old prospect for denizenship, they must soon sit the Survival Aptitude Test. Only the smartest pass. The rest are harvested for grooll, the city-state's sole food source and barter currency.If Daoren's intellect can outpace his anxiety, he might earn the first perfect score in history and be named ruler. Heqet knows Daoren can't do it without her - even if he'd be the last person to ask for help. But when tragedy strikes all-too-close to home, the pair make a shocking discovery that binds their fate and crushes all hope.A murky cabal has been manipulating S.A.T. scores for the dull-witted children of the ruling caste, amassing a fortune in grooll and triggering a severe food shortage. Worse, they plan to protect their wealth by ensuring Daoren's test ends with his culling, not his coronation.Survival Aptitude Test: Sound is the first book in Mike Sheriff's post-apocalyptic sci-fi series, The Extinction Odyssey. Fans of classic dystopian tales like Soylent Green and Logan's Run should enjoy this modern twist on humanity's last gasp.Grab Survival Aptitude Test: Sound and test your nerves today!