On a hazy summer's morning in 1965, nine-year-old Michael McCabe and his four-year-old sister, Catherine, kiss their mother goodbye and set off to the beach. They never return. As a junior constable, Bill Keliher was there when the McCabe kids went missing. Now, thirty years later, the respected senior police inspector is still enslaved by the mystery. For others, it's a riddle that will never be solved. But Bill Keliher knows better. He knows that no secret can be buried so deep that sweat, toil and tears won't eventually bring it to the surface. And he's going to be there when it happens. He has to be. It's his secret too.