The summer holidays are dragging on and Harry Potter can't wait for the start of the school year. It is his fourth year at Hogwarts School of Witchcraft and Wizardry and there are spells to be learnt and (unluckily) Potions and Divination lessons to be attended. But Harry can't know that the atmosphere is darkening around him.

The fifth title in the worldwide bestselling series

Tally lives in a world where your sixteenth birthday brings aesthetic perfection: an operation which erases your flaws, transforming you from an 'Ugly' into a 'Pretty'. She is on the eve of this event, and cannot wait for her life to change. As well as guaranteeing supermodel looks, life as a Pretty seems to revolve around having a good time.

Carmen, Tibby, Lena and Bridget have been best friends all their lives. They live in the same small American town and usually spend every moment of their long summer holidays together. Tibby buys a pair of jeans in a second-hand shop and the girls discover that the trousers fit each of them perfectly, despite their different figures and heights.

Summer is always a special time for the four teenage best friends: Bee, Tibby, Carmen and Lena. This year there's an added poignancy as the girls know this is their last summer together. Can the strength of their friendship overpower the feuds in their families and leave the girls with happy memories of the third summer of the sisterhood?

It's a summer that will forever change the lives of Lena, Carmen, Bee and Tibby, here and now, past and future, together and apart.