Women, Dr. Jacob Hartman knew, were a mystery. Take the first time he met social worker Hannah Smith at the Stone Refuge home for foster children. The woman stared him down as if he'd come at her with castor oil.

Why? His past was full of heavy-duty heartache, but he was positive they'd never met. And as a former foster child himself, Jacob was deeply touched by how much she cared about the kids at the home, how loving she was—to everyone but him. Which was where, he figured, the mistletoe came in!