The Sneaky Letters Series

Field notes

The homepage models the reading loop directly: a visitor selects one of two physical-book titles, enters its room, identifies gold or red letter endings, and clicks each clue into a tally. The cabinet starts at 0 / 30 found, with the first two finds demonstrated. The publisher also says the books include a word activity at the back, positioning the pattern as a reason to reread rather than as a substitute for the story.