The 100-Year Old Secret (The Sherlock Files #1) by Tracy Barrett
An interesting mystery series with this title being nominated for the 2016 Bluestem Award.. Xander has a photographic memory, much like the main character in the Cam Jansen series. It was refreshing how a brother and sister can actually like each other and enjoy spending time together. I learned some British food names like scones and clotted cream, which is really a biscuit spread with soft cream. Also the word subway in England means a passage under a street instead of an underground train. If you are looking for a mystery series that keeps you guessing all the way until the end, this would be the series for you.