Forty-one matches. One is missing.
When genetic genealogist Lyra Vail is hired to identify forty-one adults secretly fathered by a respected fertility doctor, the case seems like another buried family truth waiting to be uncovered.
Then the people on her list start dying.
The deaths follow the network Lyra built—the same ranking she created to help a fractured family find one another. Now someone is using her work as a map, and the woman who makes a living uncovering other people’s secrets must figure out who has weaponized hers before the next name on the list becomes another body.
But Lyra has secrets of her own. Twelve years ago, one of her conclusions sent her father to prison for murder. And the closer she gets to the truth in the Prentice family, the harder it becomes to ignore the possibility that certainty has always been her most dangerous mistake.
The Only Daughter is a twist-driven forensic domestic thriller about DNA, family secrets, privacy, and the terrible consequences of believing blood can tell you everything.