Indulgence in Death is another Eve Dallas novel. There are over 30 books in the series now. Eve is a homicide detective in New York city about 50 years in the future.
She and her husband Roarke start this story on vacation in Ireland, but when they get home homicides start piling up fast. Eve's got victims who've been killed with exotic weapons and not much to go on. And she could be on the killer's victims list. Very highly recommended.