Step into a real 1915 inquiry as a junior investigator building the file the official report couldn’t. Five sealed evidence envelopes guide students through decoding a real wireless transmission, reconstructing a damaged cargo record, and auditing an official document for what it quietly leaves out. No locks required, just careful reading and cross-referencing. Includes a full facilitator guide, answer key, self-check card for solo play, and three differentiation tiers for grades 3 to 12, but geared mostly towards middle and high school. While it is an escape room, it’s built like a real inquiry, and not simply not a treasure hunt: every stage ends in a written hypothesis, judgment call, or argument.