Twelve-year-old twins Nick and Eryn and their robot stepsiblings, Jackson and Ava, try to save humanity from killer robots.
307 pages ; 22 cm.
Sequel to: Under their skinches
Accelerated Reader AR.
Series:Haddix, Margaret Peterson. Under their skin
Haddix, Margaret Peterson. Under their skin ; bk. 2.
Under their skin
Under their skin ; book 2.
Subjects:Brothers and sisters -- Juvenile fiction.
Extinction (Biology) -- Juvenile fiction.
Human beings -- Juvenile fiction.
Robots -- Juvenile fiction.
Twins -- Juvenile fiction.