A woman seeks an explanation for her mother's mysterious disappearance 34 years earlier.

Kinsey Millhone's newest client, Michael Sutton, claims he has recently remembered a long-repressed event in his childhood that could unlock a twenty-year-old mystery; but as Kinsey tries to help Michael find the scene of a crime he witnessed, she begins to wonder if her client is telling her the whole truth.

"Of #1 New York Times-bestselling author Sue Grafton, NPR's Maureen Corrigan said, "Makes me wish there were more than 26 letters." With only two letters left, Grafton's many devoted readers will share that sentiment. X: The number ten. An unknown quantity. A mistake. A cross. A kiss. X: The shortest entry in Webster's Unabridged. Derived from Greek and Latin and commonly found in science, medicine, and religion. The most graphically dramatic...