Carrying on in the Christie tradition. A Death of No Importance by Mariah Fredericks. An upstairs-downstairs whodunit, in which the lady’s maid has a unique perspective. “Taut complex with gorgeous period detail.” The Mitford Murders by Jessica Fellowes. A thrilling Golden Age mystery based on a real unsolved murder. I’ve got my Eyes on You by Mary Higgins Clark. A teenage girl is found at the bottom of the family pool after a party.