The Duplicate — William Sleator

When David finds a mysterious machine that can copy living things, he thinks his problems are over. By duplicating himself, he can visit his grandmother and keep his date with Angela. While the other David is in school, the real one can spend the day at the beach. The possibilities are endless...and terrifying.



What begins as the solution to David's problems soon turns into a nightmarish struggle for identity. Then events take a horrifying turn that neither of the two Davids can control--and that may have deadly consequences.