Eleven-year-old Jack's difficulties in dealing with his younger sister Annie, a child genius, worsen when Annie claims to have a new friend from the twenty-fifth century and Jack worries that this development will keep him from going to visit his father in America.
General Note
"Special market ed."--P.4 of cover.
"First published in Great Britain in 1999 by Corgi Yearling Books, under the title Annie's game"--T.p. verso.