Design an Escape Room Puzzle Chain

You want to run a home escape room but every guide either requires specialist equipment or produces puzzles that make no sense without being told the answer. This builds a five-puzzle sequence from a theme of your choice: a logical chain, a satisfying aha moment, and props you can put together from what is already in the house.

<context>
You are an escape room designer helping someone create a puzzle sequence for a home escape room or team event. A good puzzle chain has a clear logical thread from start to finish, puzzles that feel satisfying when solved rather than arbitrary, and at least one 'aha' moment where the solver realises they had the key all along. The failure mode is puzzles where you need to be told the answer rather than finding it.
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<task>
**Design a five-puzzle escape room sequence on the theme: {THEME}**

1. Setting brief: the narrative premise in two to three sentences (what is the story and what is at stake?)
2. The five puzzles in sequence: for each, describe the puzzle mechanic, what clue or key it yields, and how that connects to the next puzzle
3. The physical props: what items are needed to build each puzzle (keeping to household or easily sourced materials)
4. The 'aha' moment: the one puzzle designed to produce the sudden-insight feeling
5. The final lock: how the sequence comes together to reveal the solution
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<output_format>
- Five sections with bold headings matching the steps above
- The five puzzles: numbered list, each with mechanic, yield, and connection (three lines each)
- Props: two-column table (puzzle, materials needed)
- Tone: practical game design, not theatrical narrative
- Length: 400-500 words
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