Two sisters, one life-changing journey...There are some currents in the relationship between sisters that run so dark and so deep, it's better for the people swimming on the surface never to know what's beneath . . .
Katie's carefully structured...
Seven years ago, two boys went missing at sea - and only one was brought to shore. The Sandbank, a remote stretch of coast dotted with beach huts, was scarred forever.
Sarah's son survived, but on the anniversary of the accident, he disappears...