Timely and powerful; the new coming-of-age thriller from the bestselling author of The One Memory of Flora Banks.

1. Live your best life.

2. Uncover family secrets.

3. Trust no one

What would you do when you hear the news that humans have done such damage to the earth that there might only be a limited amount of safe air left - a year's worth at most?

You'd work through your bucket list, heal rifts, do everything you've never been brave enough to do before?

Olivia is struggling to do any of this. What it is she truly wants to do? Who do she wants to be?

Then out of the blue comes contact from a long-lost cousin Olivia didn't even know existed. Natasha is everything Olivia wants to be and more.

And as the girls meet up for a long, hot last summer, Olivia finds Natasha's ease and self-confidence having an effect on her. But Natasha definitely isn't everything she first appears to be . . . I walked home. I kept hearing footsteps behind me, but every time I turned around, no one was there.