My Perfect Sister: An absolutely gripping psychological thriller with a heart-stopping twist

**LONGLISTED for the Guardian's Not the Booker Prize**

'Omg what an ending, I did not see that coming! What a brilliantly gripping book... I loved it!' Reader review, 5 stars

Annie is five when her beloved big sister, Gemma, leaves for school and is never seen again.

The police search for weeks and Annie never gives up hope that Gemma will one day come home to her.

Now, twenty years after her sister mysteriously vanished, Annie returns to her childhood home to care for her ill mother.

Opening th...