How well do you really know the one you love? With her customary page - turning style and potent themes, this is Caroline Overington at her thought - provoking best. <br/><br/>'Why do some people decide to get married when everyone around them would seem to agree that marriage, at least for the two people in question, is a terrifically bad idea?'<br/><br/>The year is 1999, and Lachlan Colbert - Colby - has the world at his feet. He's got a big job on Wall Street and a sleek bachelor pad in the heart of Manhattan. <br/><br/>With money no object, he and his friends take a trip to Australia to see in the new millennium. And it's there, on a hired yacht sailing the Whitsundays, that he meets Caitlin. <br/><br/>Caitlin Hourigan has got wild hair and torn shorts - and has barely ever left the small patch of Queensland where she grew up. But Colby is smitten and for Caitlin, a girl from the wrong side of the tracks, a blissful future awaits - marriage, a big house, a beautiful little boy.<br/><br/>But nothing is ever as perfect as it seems. And for Lachlan and Caitlin the nightmare is only just beginning