Agent's Secret Child by B.J. Daniels

The mission: find mother and child.

Finding Isabella Montenegro and her young daughter and bringing them back to testify should have been easy. But one look at Isabella and Texas Confidential Agent Jake Cantrell remembered a woman he’d cherished...a woman who’d died. And one look at the child — and he saw himself in her eyes...until she’d met Jake Cantrell, Isabella’s past had been a blank. Now fragmented memories began to assault her. Who was she? If Jake had fathered her child, then her entire life was a lie. Now that false life and the life of her daughter were at stake — and there was only Jake to trust.