25
Sep
Author Nancy Springer invented Sherlock’s secret sister. You might remember back in 2017 when Benedict Cumberbatch’s Sherlock Holmes met his secret — and criminally insane — sister Eurus Holmes (Sian Brooke) in the 4th season of the BBC’s Sherlock, but Enola Holmes (Millie Bobby Brown) came first. Springer’s Enola made her splash in the 2006 middle-grade book The Case of the Missing Marquess (upon which the new movie Enola Holmes is based) which makes her the reigning champ of secret Holmes siblings, at least in the 21st century. Are there other secret Holmes siblings? What about the Holmes parents? Did…