The 'Wonderland' device, an alien program recovered by humans, allows Lieutenant Colonel Vosch, the brutal leader of the base, to access the memories of each test subject and root out any alien infiltrators. Meanwhile, against all odds, Ben finds his way to Camp Haven, a military base where he begins training to destroy any remaining humans believed to be 'infested' by alien contact. In the series, Cassie goes from texting with her best friend, Lizbeth, and daydreaming about handsome Ben Parish to doing whatever is necessary to survive and protect Sam after their parents die. During the fourth wave, lone assassins called 'Silencers' pick off isolated survivors, ushering in the fifth wave, a clean-up operation designed to render anyone left - assuming anyone is left - something less than human.

The first three 'Waves' take place in the space of three months, killing most of the world's population through electromagnetic pulses, coastal flooding and a bird-borne disease. The arrival of 'the Others,' as they are called, heralds the beginning of successive waves of destruction.

'The Last Star' is the third and final installment of Rick Yancey's dystopian Young Adult series that begins with New York Times bestseller 'The 5th Wave' and continues in 'The Infinite Sea.' In the trilogy, 16-year-old Cassie Sullivan, a curly-haired, freckle-nosed teen from Ohio, struggles to adapt when ordinary life with her parents and five-year-old brother, Sam, is interrupted by the ominous appearance of a spaceship hovering above Earth.

The last star rick yancey