An international sensation and a bestseller that has sold over 1.5 million copies.  A moving story of a family's search for their missing mother - and their discovery of the desires, heartaches and secrets they never realized she harbored within.

When sixty-nine year old So-nyo is separated from her husband among the crowds of the Seoul subway station, and vanishes, their children are consumed with loud recriminations, and are awash in sorrow and guilt.  Soon a larger question emerges: do they really know the woman they called Mom?

This is a mystery of one mother that reveals itself to be the mystery of all our mothers: about her triumphs and disappointments and about who she is on her own terms, separate from who she is to her family. If you have ever been a daughter, a son, a husband or a mother, this book is a revelation - one that will bring tears to your eyes.