I’m delighted to welcome back Katharine Johnson, whose historical mysteries make engrossing reading. She’s already told us a little about her latest novel, The Secret, when it was a work in progress. Now, publication day is approaching on 1st June, and I’m looking forward to The Secret popping onto my Kindle that day. The book blurb tells you more about it below. In the meantime, Katy whets our appetite with some insights into the inspiration behind the book and the history on which it’s based.