Maggie Gilbert and her children, Jack and Alice, live a pretty normal life. That is, until Maggie starts looking into her family tree. In doing so, she uncovers a dark mystery that endangers her children. She has to solve the mystery in the past, if she is to save her family in the present. Together with a fellow genealogist, Zelah, Maggie unearths more and more details about the drowning of a small girl and the unsolved disappearance of Maggie's ancestor.

Esme Quentin is devastated when her sister Elizabeth is assaulted and left unconscious, miles from her home. Two days later Esme discovers that Elizabeth has a secret past. Desperate for answers which the comatose Elizabeth cannot give, Esme enlists the help of her friend Lucy to search for the truth, unaware of the dangerous path she is treading. Together they unravel a tangle of bitterness, blackmail, and dubious inheritance, and as the harrowing story is finally revealed, Esme stumbles upon evidence of a pitiful crime.

In a bid to heal from the grief of a personal loss, forensic genealogist RaeJean Hunter takes on a straightforward case-identify human remains found on a nearby college campus, believed to be the 180-year-old remains of Mary Rogers, a woman who died mysteriously in 1841 and was believed to have been buried in the nearby cemetery that had washed away. It should be simple enough, a project to get her back in the game.

The job presented to forensic genealogist, Morton Farrier, ought to have been simple and easy. But the surprise discovery of an additional marriage to his client’s father leads Morton on an enquiry, revolving around a mysterious death in the county asylum. Requiring his various investigative genealogical skills, Morton must work to unravel this complex 80-year-old secret and finally reveal the truth to his client.

DNA Never Lies is the first in a series of novels featuring Karen Copperfield, investigative genealogist. Karen helps people make sense of sometimes dark family secrets revealed by DNA tests as they ask: 'what happens when nothing you believed is true?'