Night of the Fannie

Fannie Whittaker is a mysterious new girl that seems to have appeared one
day out of the blue. Grace Clemens is her neighbor, and she can't
believe that she's never met Fannie or seen her at school before,
until the day she introduces herself to Grace at the bus stop.
There's something strange about Fannie that makes her different from
the other girls, but Grace just can't put her finger on it...

Before long, Grace finds herself plunged into a whirlwind of confusion as
Fannie befriends her. Strange things start happening with Grace and
her friends, and when she starts to try pushing Fannie out of their
lives, she finds that things are more crazy than any of them ever
thought. Fannie wants Grace all to herself as her “best friend,”
and she will stop at nothing until they become best
friends...forever.