Anything Goes (Grace and Favor Mystery Series, No. 1)

Lily and Robert Brewster are delighted to be told they're the joint heirs to their rich uncle's estate. They're not so pleased to hear the conditions under which they'll inherit, but anything's better than the jobs they had while trying to eke out an existence in New York. However, it turns out their rich old uncle was murdered, and then another victim turns up dead in their kitchen. Can Lily and Robert find the murderer before he or she kills again?