Adam's Daughter by Jennifer Taylor

The doctor's secret child

Nurse Elizabeth Campbell had promised her sister she would never reveal her baby's identity to its father. But now Beth has Hannah in her care and the child is in need of her father's help. Beth knows she must find him.

Dr. Adam Knight is furious that no one told him he had a daughter, and now he's determined to be involved in Hannah's life. But he'll also be in Beth's life—fueling their unexpected attraction. An attraction that Beth wants to resist because she fears that Adam's real feelings are not for herself—but for her sister!