Clayton, Emma.

The roar / Emma Clayton. - New York ; Toronto : Scholastic Inc., [2012], c2011. - 481 p.

"Chicken House."

In an overpopulated world where all signs of nature have been obliterated and a wall has been erected to keep out plague-ridden animals, twelve-year-old Mika refuses to believe that his twin sister was killed after being abducted, and continues to search for her in spite of the dangers he faces in doing so.

ISBN: 0439927854 (pbk.) 9780439927857 (pbk.)

Subjects--Topical Terms:
Twins
Brothers and sisters
Genetic engineering
Computer war games