Cradle Conspiracy by Christy Barritt

A child in jeopardy...

When the mother of the toddler Sienna Thompson is babysitting never returns for him - and then the child's nearly abducted - Sienna knows their lives are in danger. Sienna's neighbor, FBI agent Devin Matthews, thwarts the kidnapping and promises to protect Sienna and the boy. But when they discover the child's missing mother isn't who she claimed to be, can they survive long enough to uncover the truth?