24 puzzle nights to Christmas Eve
The Mysterious Countdown: The Escape Room Advent Calendar Mystery
One puzzle a night from December 1, a wall with no door, and the clockwork behind it that has to strike by midnight on Christmas Eve.
- A puzzle book, not a box
- Adults and teens 14+
- No app, no screen
Paperback, 116 pages, 6 x 9 in.
We publish this book. As an Amazon Associate we earn from qualifying purchases.
As shown in the TikTok videos
Is this the escape room book from TikTok?
Yes. The clockmaker's workshop, the wall with no door, the code of the night and Night 1 of 24: this is the book from those videos, The Mysterious Countdown by Cork & Pin Press. It is a real, printed paperback puzzle book, not a box, and it is sold on Amazon.
Look inside the puzzle book
Thirteen real pages of an interactive puzzle book, from the welcome letter on Bell Lane to an evening marked hard. Nothing from Christmas Eve and no solutions: the ending stays yours.
- 13 interior pages
- No spoilers
- Hints printed upside down
- Bell Lane
Page 3: the premise, and a box that says exactly what you are holding.
- How to play
How an evening works, in six short steps, and the four quarters of the dial.
- The Strike Row
The Strike Row: 24 empty fields, one for each evening.
- December 1
December 1: the envelope on the lathe, its puzzle, and the document of the day.
- December 3
December 3: a letter grid sent by the trade society.
- December 7
December 7: a floor plan of the house to walk, one square at a time.
- Catch-up page
A catch-up page: where your row should be, with no letters printed.
- December 14
December 14: two stamp books that disagree in four places.
- December 19
December 19: six pieces in the cellar and an elimination grid marked hard.
December 1
Try the first evening
December 1 is shown in full: the story, the puzzle and the document of the day. Everything you need for the first letter is on these two pages.
Tap to zoom. Keep your letter to yourself.
How an evening works
Most escape room books hand you a pile of separate riddles. This one is an escape room you solve in a book: one case from December 1 to Christmas Eve, and every evening ends with one letter.
“One evening, one letter, no reading ahead.”
- 01
Solve
Open the date that is due, read the story and the note from the old master's shop book, then solve the puzzle. The answer is always a bench word, a word from the workshop.
- 02
Look up
Find that bench word in the Bench Table on the day's document page. Next to it stands a two-digit field number.
- 03
Convert
The first digit is the row, the second is the column in that evening's Code Table. The cell you land on holds your letter.
- 04
Write in
Pencil the letter into today's field in the Strike Row, close the book, and leave tomorrow for tomorrow.
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
An advent calendar puzzle in a book, not a box
There are no doors to tear open and no chocolate. Each date is a spread in the book, with the story and puzzle on the left and the document of the day on the right, and the longer evenings run to four pages. The advent puzzles change every night: ciphers, letter grids, elimination grids, a floor plan to walk and two stencils to cut out. The first evenings are marked easy, and the later ones climb to hard.
What makes it a good escape room puzzle book
- 01
One case, start to finish
All 24 nights belong to the same story on Bell Lane, and every letter stays in the row until Christmas Eve. No evening is filler.
- 02
Hints on the same page
Each puzzle has its hints printed upside down at the foot of the page. Turn the book only when you want one.
- 03
Catch-up pages
After days 7, 14 and 21 a catch-up page shows how far your row should be and where to find help for a missed day.
- 04
Walkthroughs at the back
If a night beats you, the back of the book walks through every puzzle step by step, so you can enter the letter and keep going.
- 05
Pencil and paper only
No app, no screen, no internet. A pencil, pointed scissors and a table.
Who it is for
- You book an escape room for every birthday and want one that lasts all of December.
- You want an escape room puzzle book for adults with a real story around the puzzles.
- You are looking for a December ritual for two: two mugs, two pencils, one evening at a time.
- You need a gift for a puzzle lover that is not another jigsaw box.
- You have a teen of 14 or older who likes codes and ciphers and can play alone or with you.
Who it is not for
- You want a physical box with doors, drawers or chocolate. This is a paperback book.
- You want horror or gore. The tone is calm and mysterious: a sealed wall, a clockwork and a deadline.
- You are buying for younger children. Our family book fits them better: The Family Escape Room Advent Calendar
We publish this book. As an Amazon Associate we earn from qualifying purchases.
- You want 24 puzzles to race through in one sitting. The case is built to unfold one evening at a time.
Free with the book
Christmas bonus inside
The book comes with two free printables. The Night Shift adds four more evenings on Bell Lane, with a cellar plan and a third stencil. The Workshop Folder holds the Strike Row as a single sheet, four quarter cards for the table and a blank workshop certificate.
The code and the address are printed on the bonus page at the back of the book. Nothing is asked of you: no address, no email.
The book is complete without it.
Reviews from players
Player reviews are on Amazon, in the players' own words. Or judge the book yourself: the whole first evening is printed on this page.
We publish this book. As an Amazon Associate we earn from qualifying purchases.
This book was tested at real tables before it went to print. If something does not add up for you, write to kontakt@kalderno.com. We read every message.
About Cork & Pin Press
Cork & Pin Press is a small studio of puzzle constructors and mystery writers. The name comes from the wall where every project starts: corkboard, string and pins. The studio makes books you put on a table, with no screen, no app and no subscription, and builds every puzzle so it can be solved from what is printed on the page. Its other books include the ALIBI-X case files and The Family Escape Room Advent Calendar.
Cork & Pin Press is an imprint published by Kalderno (Quicktale Limited).
Before you buy
Questions about The Mysterious Countdown
Is this the escape room advent calendar book from TikTok?
Yes. The Mysterious Countdown by Cork & Pin Press is the escape room advent calendar book shown in the TikTok videos: the clockmaker's workshop, the wall with no door and the code of the night. It is a 116-page paperback puzzle book with 24 puzzle nights from December 1 to Christmas Eve.
Is The Mysterious Countdown a real book?
Yes. The Mysterious Countdown is a real, printed paperback of 116 pages, 6 x 9 inches, published by Cork & Pin Press on September 5, 2026 (ISBN 979-8172026911). The pages shown on this site are pages from the printed book.
Where can I buy The Mysterious Countdown?
The Mysterious Countdown by Cork & Pin Press is sold as a paperback on Amazon.com, and the buttons on this page go straight to it. The German edition, Der Escape Room Krimi-Adventskalender, is sold on amazon.de.
Is it a box or a book?
It is a book. The Mysterious Countdown is a paperback puzzle book, not a box, so there are no doors to open and no chocolate inside. Each of the 24 dates is a spread in the book with a story, a puzzle and a document of the day. If you were looking for an advent puzzle calendar with a jigsaw behind every door, this is different: the 24 puzzles are printed pages you solve with a pencil.
How does an escape room book work?
An escape room book turns the puzzles of an escape room into pages you solve with a pencil. In The Mysterious Countdown each evening has one puzzle, its answer is a word you turn into a single letter with the tables on the page, and that letter goes into a row of 24 fields. One evening, one letter, until Christmas Eve.
Is it for adults? Can teens play?
Yes. It is a mystery advent calendar for adults, and teens from 14 can play too, alone or alongside you. The first evenings are marked easy and the later ones climb to hard, and you do not need any puzzle experience to start.
What if we get stuck? Are the answers online?
Hints are printed upside down on the same page, so you only read one when you turn the book. Catch-up pages follow days 7, 14 and 21, and step-by-step walkthroughs for every puzzle are printed at the back of the book. We never post answers online, so the ending stays yours.
Can we play it as a couple, or alone?
Both. The book is made for one player or a pair. On a few evenings the task is split into four quarters, so two players can take two quarters each, and a solo player works through them in order. It also works well as a December date night for two.
When do we start, and is it a 2026 edition?
You start on December 1 and play one evening per date until Christmas Eve, so these are Christmas advent puzzles for the 24 nights before Christmas. The evenings follow the calendar dates, not one particular year, so the book works for Christmas 2026 and any December after. If you start late, play two evenings a night until you catch up.
What do I need to play?
A pencil, a pair of pointed scissors or a craft knife for the cut-out stencils, and a table. There is no app, no screen and no internet involved. The book is in English, and a German edition is sold separately on amazon.de.
Who is Cork & Pin Press?
Cork & Pin Press is a puzzle and mystery imprint published by Kalderno. It makes books you play at a table, with no screen and no app, including The Mysterious Countdown, The Family Escape Room Advent Calendar and the ALIBI-X case files.
Solve the clockmaker's code. Find the hidden door.
Behind this wall something has been running for eighty years. You have until midnight on Christmas Eve.
A puzzle book, not a box.
One minute to midnight
The workshop opens on December 1.
One paperback, 24 evenings, one row to fill by midnight on Christmas Eve. Get it in November, and the first evening is ready when December starts.
We publish this book. As an Amazon Associate we earn from qualifying purchases.
Giving it as a gift? It suits a puzzle lover who has done every escape room in town, a couple who want a December ritual, or a teen of 14 or older who likes codes. It wraps flat like any paperback, and two pencils complete the set.