Some simple math: one + one + one = one too many! From the day they were born, Mary Ann and Mallory have been best friends. They've always been a two-some. But now, there's a new girl in town, and what used to be just the two of them has turned into three. If you ask Mallory, things just don't add up!
This book is part of the Mallory McDonald Books series and is book #21 in the series.