Monthly Case File Mystery by letter
Detective · Fair-play whodunit

The Red Ledger Affair

Ashford Bridge mill town, autumn 1928. A fair-play investigation told in six letters. Suspects you can name. Clues you can argue about. A correspondent who needs your judgment.

  • 6 letters · one complete case
  • One-time purchase
  • Two-Lock ending
Story hook · Spoiler-free

Something about the fall will not sit.

Partners' clerk Prudence York writes after Harriet Voss is found dead at the mill stairs, called an accident. Desk lamp still lit, outdoor boots under the desk, coat dry. One early clue: overtime figures in the red ledger that refuse to reconcile.

Sample opening of The Red Ledger Affair Letter One, faded before clues appear
Opening of Letter One. The rest arrives by email.
How it works

Digital envelopes. One complete case.

Each delivery is a letter (~2 pages) plus printable extras. Choose the $27 drip (one letter every 5 days over about 26 days) or $37 unlock-all (all six at once). Two-Lock ending: letters 1–5 plant who and how; the decisive why and final proof open in letter 6.

Letters open mid-discovery. Motive leans on protection, shame, and reputation. The culprit is visible early. The method is plantable. The why waits for letter 6.

One-time purchase · Not a subscription

Buy one complete case

Both options are a single purchase of the same six-letter case. No recurring billing.

Month drip

$27

$27: One-time purchase of one complete case: six letters delivered over 26 days (one every 5 days). Not a subscription.

  • Letter 1 now, then every 5 days through letter 6
  • Letter + printable extras
  • Lock Two opens in letter 6
Buy drip · $27

Payment runs on WarriorPlus (vendor name appears as Ry04Mac). 14-day money-back guarantee. Letters arrive by email from hello@monthlycasefile.com.

New to the format? Get the free complete three-letter mystery (The Silver Bloom Cup). It does not spoil this case.

Quick fit

Yes / skip

✓ Yes if…

  • You grew up on Christie, Sayers, or modern fair-play pastiche
  • You want clues you can debate, not vibes-only atmosphere
  • You’re happy to sit with a question for five days

✗ Skip if…

  • You need the whole novel tonight (choose unlock-all instead)
  • You want gore, horror, or thriller pacing
  • You’re looking for a real-crime documentary (see Westbrook: fiction)
Questions

FAQ

Is this a subscription or physical mail?

No. Both $27 and $37 are one-time purchases of one complete digital case. Letters arrive by email. Print what you want; keep the rest on screen. Not a recurring subscription and not postal mail.

What if I stop reading early?

You keep every letter already delivered. The drip is not a cancelable subscription that stops billing; you already paid once. Lock Two (the decisive why and final proof) is in letter 6, so finishing matters for the ending, not because billing continues.

How does checkout work?

Checkout opens WarriorPlus in a new tab. Vendor name appears as Ry04Mac. Choose Buy drip · $27 or Unlock all · $37. 14-day money-back guarantee. Delivery by email from hello@monthlycasefile.com.

Does the free case spoil this one?

No. The free complete three-letter mystery (The Silver Bloom Cup) is a separate mini-case and does not spoil any paid case.

Open the ledger.

One complete case. Fair-play clues. An ending that waits for letter 6.

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