Murder on Fifth Avenue (Gaslight Mystery #14)

Sarah Brandt’s family is one of the oldest in New York City, and her father, Felix Decker, takes his position in society very seriously. He still refuses to resign himself to his daughter being involved with an Irish Catholic police detective. But when a member of his private club — the very exclusive Knickerbocker — is murdered, Decker forms an uneasy alliance with Detective Sergeant Frank Malloy to solve the crime as discreetly as possible.

Malloy soon discovers that despite his social standing, the deceased — Algernon Abernathy — was no gentleman. In fact, he’s left behind his own unofficial club of sorts, populated by everyone who despised him. As he and Sarah sort through the suspects, it becomes clear to her that her father is evaluating more than the detective’s investigative abilities, and that, on a personal level, there is much more at stake for Malloy than discovering who revoked Abernathy’s membership — permanently.