Quicksand by Iris Johansen

Forensic sculptor Eve Duncan has spent years trying to bring closure to families of the missing. But when a ruthless killer taunts her with clues to her own daughter Bonnie’s long-ago disappearance, Eve is thrust into a deadly game that tests every limit of her courage. Joined by CIA agent Catherine Ling and Joe Quinn, she follows a trail of lies, obsession, and blood that leads to a chilling truth buried deep in the past.

As the hunt intensifies, Eve faces a terrifying choice: uncover the truth about Bonnie—or lose herself in the quicksand of vengeance.