The Castaways

by Lucy Clarke (Harpercollins, £12.99)

Sisters Lori and Erin were supposed to be having the trip of a lifetime, until a huge row means Erin doesn’t get on a flight that crashes. The plane and passengers – including her sister – are lost, but two years later, the pilot reappears. Erin has spent all this time searching for her sister; could she still be alive? A twisty, wonderful heartfelt story about sibling love, this is the author’s best yet. 18 March