“The Windsor Knot” by S. J. Bennett (2020)

“It was an almost perfect spring day.”

Fiction is littered with detectives, be they London gents with photographic memories, Belgian refugees, fussy old women in small villages, aristocrats just killing time, or schoolgirls with a taste for justice. There has never been one, however, like the detective presented in The Windsor Knot.

The morning after a party at Windsor Castle, everyone is recovering from the festivities over breakfast when the news breaks that the piano player from the previous ...