Operation Twin Trouble

  O’Ryan, Ray.

  Operation twin trouble / by Ray O’Ryan ; illustrated by Jason Kraft. —

  First Little Simon paperback edition.

  pages cm. — (Galaxy Zack ; #12)

  Summary: “Zack’s twin sisters are best friends, but when the two get into an argument while visiting another planet, Zack finds himself stuck in the middle of a tricky twin situation”— Provided by publisher.

  ISBN 978-1-4814-4400-2 (hc) — ISBN 978-1-4814-4399-9 (pbk) —

  ISBN 978-1-4814-4401-9 (eBook)

  [1. Science fiction. 2. Twins—Fiction. 3. Sisters—Fiction.

  4. Brothers and sisters—Fiction. 5. Friendship—Fiction.

  6. Human-alien encounters—Fiction.]

  I. Kraft, Jason, illustrator. II. Title.

  PZ7.O7843Op 2015

  [Fic]—dc23

  2015006939