Backlash — Jessica Dale

Taking it slow is no longer an option for James Fitzgerald and his new love when Carrie's teenaged son appears at her door, leading her abusive estranged husband right to her. But the batterer brings more baggage to the Virginia woods than just his rage at the wife who ran away.

An already complicated custody battle devolves into a struggle for hidden stakes, and the challenges thrown at the couple threaten to tear them apart and destroy Carrie's hopes for a normal, happy life.

(This is Book 2 in the Unintended Consequences series. James and Carrie's relationship begins in Payback, Book 1.)