From left -- Tommy McKeon, 10, Terry Catasus Jennings and Kacey Banga, 9, enjoy a reading of Jennings’ new book “Sounds of the Savanna” at Reston’s Used Book Shop at Lake Anne. Kacey and her cousin Tommy came in and were initially attracted by the homemade cookies that Jennings had brought with her, but soon found themselves engaged in the story, answering questions and guessing what was coming next as the pages were turned.