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The Forbidden Door


Kauai rises out of the pacific shrouded in mist and jungle. Strange things have been reported by lifelong residents and tourists alike. Lights aglow in strange colors upon the mountains, nocturnal insects buzzing in ways that sound like speech. Unnamed men on the roads at night keeping people from traveling to remote destinations.

Private investigator Brian Cray needs your help if he is going to find notable Archaeologist Robert Lockwood and his research assistant. Leads are growing thin and a trek out to the research camp high up upon the Napali coast might be the only move left if he is going to find some answers, and he doesn’t want to go it alone.

You’ve dreamt about a door under the island. A door in the darkness. Is that what Lockwood discovered? Is that why he is missing?

Pack your bags, you’re about to find out!


- Branching Investigation Paths

- An exotic island theme

- Content suitable for all ages and groups

- Five pre-generated characters

- High-Quality Player handouts

- PDF bookmarks

- Full-color artwork

About the Author

Written by horror author and long-time Keeper of Arcane Lore Matthew Tansek comes his debut foray onto the dusty mystery-laden shelves of the Miskatonic Repository. If you are interested in learning about this or his other creative projects please visit

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Reviews (4)
Discussions (3)
Customer avatar
James L June 21, 2023 8:15 pm UTC
What layout software do you use? Very clean and professional work!
Customer avatar
Matthew T June 22, 2023 2:56 pm UTC
Hi James, thanks for your comment/compliment. I actually put this together using Apple Pages and some image editing software called Pilexmator Pro, which if you have access to it is not a bad tool for this sort of project. However, I'm now learning how to use Affinity Publisher 2, which seems to be a much more powerful layout tool with a lot of additional options.
Customer avatar
Michael B June 19, 2023 12:06 am UTC
What era is this set in?
Customer avatar
Matthew T June 19, 2023 12:21 am UTC
Hi Michael, this investigation is set in the 1920s.
Customer avatar
Joshua H February 10, 2023 7:15 pm UTC
Hi, is the author from Hawaii?
Customer avatar
Matthew T February 11, 2023 3:35 pm UTC
Hi Joshua, thanks for your question.
I am a non-Hawaiian. I however have been fortunate enough to form close friendships with individuals from Hawaii and have had the opportunity to spend time on the islands. Through my interactions with my friends and my own research for this material, I have developed a deep appreciation for the rich history and cultural significance of the Hawaiian people. These things both prompted and informed this scenario which I hope you will enjoy.
Customer avatar
Joshua H February 11, 2023 7:40 pm UTC
Thanks for the reply. I'm from Hawaii and am considering running the game for my Hawaii friends.
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Scanned image
These products were created by scanning an original printed edition. Most older books are in scanned image format because original digital layout files never existed or were no longer available from the publisher.

For PDF download editions, each page has been run through Optical Character Recognition (OCR) software to attempt to decipher the printed text. The result of this OCR process is placed invisibly behind the picture of each scanned page, to allow for text searching. However, any text in a given book set on a graphical background or in handwritten fonts would most likely not be picked up by the OCR software, and is therefore not searchable. Also, a few larger books may be resampled to fit into the system, and may not have this searchable text background.

For printed books, we have performed high-resolution scans of an original hardcopy of the book. We essentially digitally re-master the book. Unfortunately, the resulting quality of these books is not as high. It's the problem of making a copy of a copy. The text is fine for reading, but illustration work starts to run dark, pixellating and/or losing shades of grey. Moiré patterns may develop in photos. We mark clearly which print titles come from scanned image books so that you can make an informed purchase decision about the quality of what you will receive.
Original electronic format
These ebooks were created from the original electronic layout files, and therefore are fully text searchable. Also, their file size tends to be smaller than scanned image books. Most newer books are in the original electronic format. Both download and print editions of such books should be high quality.
File Last Updated:
November 29, 2022
This title was added to our catalog on November 29, 2022.