Echo In The Valley

"After four years' separation, Alison had been forced to return to her husband Dirk du Bois; blackmailed by his threat to take their little son away from her if she didn't agree. But it was clear that Dirk hated her now, and was as indifferent to her as he had been when they were first married - so why did he insist that she stayed with him? For Yvette Paulson, who had broken up the marriage, was still there, and still as involved with Dirk as she had always been. Why couldn't he let Alison go?"