Chasing the Night (Eve Duncan Book 11, Catherine Ling Book 1) by Iris Johansen

One woman's nightmare... A CIA agent's two-year-old child was stolen in the night as a brutal act of vengeance. Nine years later, Catherine Ling's instincts--maternal and professional--tell her that her son is still alive. But she needs the help of someone as driven and obsessed as she is to find him. That person is Eve Duncan. ... is another woman's duty. Eve has walked the same path as Catherine, having endured the disappearance of her own daughter, Bonnie. Now Eve must raise her game as a forensic sculptor to another level, using the science of age progression to unite mother and son. But as she is drawn deeper into Catherine's horror, she must face looming demons of her own. Whoever took Bonnie is still out there--and until he is brought to justice, and Bonnie is brought home, Eve will be forever CHASING THE NIGHT