I just started reading Mrs. Claus and the Santaland Slayings by Liz Ireland. This book is the first in the Mrs. Claus Mystery series.
Married life is always an adjustment, but April has an even bigger lifestyle change than most new brides when she marries Nick. Leaving her inn in Oregon she moves to the North Pole upon becoming Mrs. Claus. Things aren't so holly jolly as she learns to deal with her mother in law and everything that's expected of her as the wife of the current Santa. The death of an unpleasant elf leaves April concerned. While no one liked Giblet Hollyberry, it was her husband who had a run in with the elf. Add to the fact that he left their bedroom in the middle of the night and seems to be avoiding her, Alice realizes just how little she truly knows her new husband. Surely, Nick had nothing to do with Giblet's death...but who did?