A Particular Eye for Villainy by Ann Granger

From "an accomplished veteran" of crime fiction, a Victorian murder mystery featuring a female sleuth and her detective husband (Kirkus Reviews).

When Mr. Thomas Tapley is found bludgeoned to death in his sitting room, his neighbor, Inspector Benjamin Ross of Scotland Yard, is immediately summoned.

Little is known about the elusive gentleman until Mr. Jonathan Tapley, QC, hears of the news, and the truth about his cousin's tragic past slowly begins to emerge. Meanwhile, Ben's wife, Lizzie, is convinced she saw someone following Thomas Tapley on the day he died, and she discovers that he received a mysterious visitor a few days before his death.

As the list of suspects begins to mount, Ben and Lizzie must unearth who would benefit most from Tapley's unfortunate demise.