DiscoverSeptember 21, 2026·5 min read

The Winter of '74: A 1974 Cold Case Reopened

The Winter of '74 is a cold case detective file for 1 to 7 investigators. Grand Hotel des Neves, 12 January 1974: Sylvie Berthaud, a 22-year-old seasonal worker, vanishes on banquet night. Fifty years later a notary hands over papers that do not match the file, and you reopen it. Twelve exhibits, two mechanical clocks that disagree, and one cipher whose key is computed from three wage slips. Rated 5 out of 5, 2.5 to 3.5 hours, $39.

The Winter of '74: A 1974 Cold Case Reopened

What is inside The Winter of '74 PDF?

Nineteen pages. The cover, the how-to page, a review briefing dated April 2024, the inventory of twelve exhibits, a sheet of hours and sums, a table of people, a conclusions report, then the twelve exhibits photographed one per page: a carbon night log, wage files, telegrams, a coded letter, an exhibit plate, controlled presences. The four levels of hints and the solution are on the case file portal, behind your personal code. The product page with five real pages as excerpts is The Winter of '74.

Why do two clocks make this cold case hard?

Not every time in the file comes from the same clock. One mechanical clock was checked against the hotel switchboard and carries the reference; another runs fast, by a constant amount you must measure yourself from events that two sources both describe. Until you have brought every time back to one clock, nothing lines up, and a witness who seems to lie is only reading the wrong dial. That is the first of the three problems, and the one that most groups solve last because they compare people before they compare instruments.

How does the wage-slip cipher work?

Three wage files do not add up. The word net does not mean the same thing before and after an advance, and a private loan is not an employer deduction. Once the three missing amounts are found, their total is a three-digit number, and that number is the key: the sum of its digits gives the step, and the order of the losses gives the order of the columns in the enciphered letter. Nothing is guessed. If the arithmetic is right the message reads at once; if it is wrong, nothing comes out and the arithmetic is what you redo. It is solved with a pencil, and the file says so.

What does the group actually have to decide?

The conclusions report asks four things: what the 1974 papers establish, contradict or leave unverifiable; one timeline on one clock with two checks; the three amounts and the decoded letter; and the person the evidence supports, plus what remains unknown. A retouched file from 1974 has a page that was redone, and the instruction that ordered it is in your hands; what it does not tell you is what its author knew in January. The hints follow those threads: hours, wages, the cipher, the scene and the route, the people, the limits of the file.

Who is The Winter of '74 for?

For a group that has solved one or two printable cases and wants the most demanding one; for two or three careful readers on a winter afternoon; for anyone who likes cold cases more than chases. Count 2.5 to 3.5 hours at one sitting, and compare the run times on the detective case files page. For a first case, take The Heist of the Century. For six to twelve players with a host, a murder mystery kit. The price is $39 for one to seven investigators, and the code sent by email waits until you first open it.

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Frequently asked questions

How many exhibits does The Winter of '74 contain?+
Twelve, photographed one per page: a carbon night log, wage files, telegrams, a coded letter, an exhibit plate and controlled presences, plus the briefing, working sheets and conclusions report. Nineteen pages in all.
Is the cipher hard?+
It is calculated, not guessed. The key is the total of three missing wage amounts; the sum of its digits gives the step, and the order of the losses gives the column order. With the right number the letter reads at once. The hints on the portal walk through it if needed.
Why 2.5 to 3.5 hours for twelve exhibits?+
Because the two clocks must be reconciled before anything else lines up, and the wage arithmetic and the cipher each take their time. Twelve dense documents, read twice, take longer than twenty-four simple ones.

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