The Missing Harbour Key — Free Printable Mini Detective Case
A missing key. Three recorded visits. Can you work out what happened?
The Missing Harbour Key is a FREE printable mini detective case from MindStack. Read the briefing, compare three evidence records, and explain your conclusion before checking the solution.
This is a complete, standalone mystery—not an unfinished sample. No purchase, audio, or outside research is required.
WHAT’S INCLUDED
One three-page PDF:
• Page 1 — Case briefing, people involved, instructions, and case boundaries.
• Page 2 — Three evidence records, investigation questions, and space for your answers.
• Page 3 — Complete solution with step-by-step reasoning.
YOUR INVESTIGATION
Identify who removed the harbour office’s spare key, establish the correct time, and distinguish what the evidence proves from what it leaves unknown.
HOW TO PLAY
1. Download the PDF.
2. Read the briefing and examine the records.
3. Write your conclusion before opening the solution.
4. Check your answer and reasoning on the final page.
WHAT YOU NEED
• A device that opens PDF files.
• A printer and pen or pencil if you prefer playing on paper.
No editing software is required. You do not need to print the case to read it and record your answers separately.
WANT A LARGER INVESTIGATION?
The final page includes an optional link to Beacon Point, MindStack’s printable detective mystery with three staged audio recordings and equivalent written transcripts.
The Missing Harbour Key is a separate case and reveals none of Beacon Point’s clues. No purchase is needed to complete this free mini-case.
PLEASE NOTE
• Free digital PDF download.
• Three pages supplied in one file.
• No physical item is shipped.
• This is a fictional investigation for entertainment.
• The evidence and solution are written; no audio is included.
• For personal, non-commercial use only. Please do not resell or redistribute the file.
• Display and print colours may vary.
CREATIVE PROCESS
Created with AI-assisted tools and curated, checked, and prepared by MindStack.
If you have difficulty accessing the download, contact MindStack using the support details provided with your order.
