Tidings of Comfort and Joy — Kristine Grayson

Lothario Johansonn invented the computer that runs the North Pole. He spends his life maintaining the machine, a thankless and almost impossible task.

When the machine suffers a critical malfunction, threatening Santa's Christmas Eve miracle, Claus & Company hire outside help. It arrives in the form of Dallas Demeris, who takes the job under protest.

Once she arrives, she realizes the extent of the problem. That problem includes Lothario, who doesn't want outside help -- no matter how beautiful. He believes attraction gets in the way of work. Dallas doesn't combine work and pleasure.

Yet the two of them must work together to save Christmas, one computer part at a time.

The first full novel in Kristine Grayson's Santa Series, Tidings of Comfort and Joy shows why Best Reviews considers her the queen of paranormal romance.