Cindy, a with-it and cynical young teen, still traumatised by her mother's recent death, is appalled when her father falls in love with one of her teachers, a woman with two teenage daughters of her own. Surely he can't be serious? She cannot imagine a worse fate than having a teacher as her stepmother, and as for the two prissy girls - she is never going to call them sisters ... no way!

But, if Cindy dislikes her prospective stepsisters, they think she is an absolute horror - spoiled, arrogant and atrociously rude to them and their mother when they visit her house. Whatever about their mother marrying again, they can't imagine being landed with Cindy as a sister ... no way!

But the parents are going to marry, and the girls are going to be family, like it or not. So who gives in? Is there any room for compromise? Will the unlikely trio of stepsisters ever change their minds about each other?

TWO GREAT BOOKS IN ONE

In a unique feature the girls' stories are told in two separate back-to-back books, one for Cindy and the other for Ashling and Alva. The reader can choose which story to begin with, getting a very different viewpoint on the girls depending on whose side of the story they read first.

Cover of Ashling's diary:

This book was recognised in the Book of the Year category by the Bisto Book Award.

This book has been graded for interest at 10+ years.

There are 224 pages in this book. This book was published 2014 by O'Brien Press Ltd .

Siobhan Parkinson is one of Ireland's leading authors for children and teenagers, and she has won numerous awards for her writing. Siobhan lives in Dublin with her husband and grown-up son.