Boxing Day, 2004, Yala, Sri Lanka: a family holiday on "the Emerald Isle" just off the south coast of India, was interrupted - torn asunder by a wave. The wave was more than thirty feet high and surged two miles inland off the sea. As it retreated, it took with it thousands of people, and left nothing but ruin in its wake.
The Indian Ocean tsunami also hit Sumatra, the Maldives, and Thailand - all of which ring the Bay of Bengal - and the overall death toll was in the hundreds of thousands - a third of them children.
It was a disaster of proportions so enormous that to ever make sense of it seemed impossible. For Sonali Deraniyagala, it was the end of a charmed life. She and her husband, her two young sons, and her parents, were all swept away. Only she survived.
She has written an intimate and profoundly moving memoir that stitches together like a kind of memory blanket -- memories from a life undisturbed and a life split apart. Sonali talks to Michael Enright about her new book "Wave".