The Horseman's Son (Harlequin Intrigue Series)

From the moment he first saw his son, ranchman Dylan Greer knew the baby he'd adopted was his in every way that mattered. And no one--not even the beautiful, strong-willed cop who claimed she was the child's mother--was going to change that. Collena Drake swore a criminal ring had stolen her baby and that someone was crossing every line to keep the illegal adoption secret. Now, in order to protect one innocent child, Collena made him a tempting offer: get married and share custody. As a businessman, Dylan thought the plan brilliant. But as a man...resisting his "bride," especially as the danger mounted, would be damn near impossible.