Springdale School Mystery Case #1: The Silent Clocktower | No Prep Reading | Differentiated Grades 5–7 | Critical Thinking & Inference Free online read aloud on YouTubeAlternate option: Paperback on Amazon, Hardcover on Amazon, Kindle e-readerNo-prep, high-engagement mystery that works across Grades 5–7.Use one story to teach inference, critical thinking, and discussion without creating multiple lesson plans.Students read, notice patterns, and build evidence-based thinking as they investigate