Twelfth Knife key art: Ravenscroft Hall in the snow at Christmas 1976, a figure at the door, a skull in the red winter sky — immagine 1
Twelfth Knife shown on an iPad held in two hands: the key art and title on screen, on a plain grey studio background — immagine 2
Twelfth Knife: twelve nights, twelve accounts, one killer. A twelve-night Christmas cold case — immagine 3
Twelfth Knife: deck the halls with bodies — immagine 4

Game Highlights

age 15 plus icon
Age 15+

Best for older teens and adults

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Risolvi il caso

Valuta le prove e nomina l'assassino

Fornitore:Masters of Mystery

Twelfth Knife: Christmas Murder Mystery Game – 12-Day Advent Calendar

€20,46

Case File Game

  • Pre-Order Now – Night One Unlocks 13 December
  • Twelve Nights, Around 15–20 Minutes A Night
  • Plays In Your Browser – Nothing To Download
  • One Player Or The Whole Household

Prima volta? Ecco come funziona

Difficulty
Difficulty: Medium
Players
Players: 1+ Players
Language
Language: English
Expected · 12 December 2026 Pre-ordine

Your case is reserved the moment you order — we deliver it the day it’s released.

Game Highlights

age 15 plus icon
Age 15+

Best for older teens and adults

magnifier icon
Risolvi il caso

Valuta le prove e nomina l'assassino

Altro in questo stile: Giochi di mistero e delitto di Natale — oppure scopri tutta la nostra gamma di giochi investigativi con delitto.

Unità Cold Case · Bacheca delle prove

Sintesi del caso

Il caso

Twelfth Knife: Christmas Murder Mystery Game – 12-Day Advent Calendar

Ravenscroft Hall, Christmas 1976.

Twelfth Knife is a Christmas cold case told across twelve nights. From 13 December, a new witness account unlocks every evening. Read it, break the lock at the end of it, and carry what you've learned into the next. By Twelfth Night you'll have heard from everyone who was in the house. Then you name the killer.

Three days before Christmas, Josiah Merritt, master of the house, is found dead on the library floor. The family doctor writes misadventure on the certificate. The family lets him. The Merritts keep twelve ornamental steel knives, one brought out of the case each night of the season to carve. By Twelfth Night, three are missing. One for each death.

Twelve people wrote down what they saw. Each one saw a piece of it. Each one left something out. Read one account a night, and by Twelfth Night you'll know who took the knives.

PRE-ORDER · NIGHT ONE UNLOCKS 13 DECEMBER

Recommended Device: Any phone, tablet or laptop
Confidential
Fascicolo del caso · MOM Cold Case Unit Status: Cold → Reopened

Cold Case Unit · Clearance Granted

You've been assigned the case

Twelfth Knife is a digital preorder. Your personal access code is emailed before Night One, which unlocks on 13 December. New witness accounts open each evening through Christmas Eve. Play in your browser on a phone, tablet or laptop; no physical kit is posted.

Inclusocon ogni cold case digitale

Unità Cold Case · Persone di interesse

The Suspects

Everyone has a story. Someone's is a lie. Open a file — the full dossiers are waiting in the case.

The Evidence

Examine the evidence

Every case is a dossier of documents, photographs and statements. Tap an exhibit to take a closer look.

Evidence log Oggetti recuperati

Evidence Manifest

Suspect files, police reports, witness statements, photographs, press clippings — and a built-in hint system with the full solution when you're ready.

Analyse the evidence · Follow the leads · Name the killer

How It Works
Scarica il tuo fascicolo cold case

Step 1

Get Your Clearance

Twelfth Knife is a digital preorder. Your personal access code is emailed before Night One, which unlocks on 13 December. New witness accounts open each evening through Christmas Eve. Play in your browser on a phone, tablet or laptop; no physical kit is posted.

Apri il fascicolo del caso

Step 2

Open The Case File

Read the case briefing and meet your list of suspects.

Analizza le prove

Step 3

Analyse The Evidence

Work through the documents — police reports, witness statements, photographs and more.

Segui gli indizi

Step 4

Follow The Leads

Cross-reference the clues, rule out the innocent and close in on your suspect.

Indica il colpevole

Step 5

Name The Killer

Commit to your theory — then check it against the built-in solution.

Continua l'indagine

Crea la tua collezione Cold Case

Tieni pronto un altro caso per quando l'ultimo indizio andrà al suo posto. Scegli due o tre indagini e aggiungile al carrello in un solo passaggio.

−10% Qualsiasi 2 casi −15% Qualsiasi 3 casi Miglior tariffa

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A night in for two — or the perfect gift

Cold cases make a brilliant gift for the mystery-lover in your life — a night in for two, or a puzzle to unwrap solo. Digital editions can even be sent straight to their inbox with a personal message, scheduled to land on the big day and opening to a cinematic reveal.

FAQs

Please read our FAQs page to find out more.

How do I receive my cold case file?

Twelfth Knife è in preordine. Riceverai via email il tuo codice di accesso personale prima che inizi il gioco, e la prima testimonianza si sblocca il 13 dicembre. Si gioca in inglese nel browser di qualsiasi smartphone, tablet o portatile.

How many people can play?

Gioca da solo o con chi vive con te. Un solo codice di accesso vale per tutti quelli che giocano insieme, così tutta la famiglia può leggere la testimonianza di ogni notte e discutere sui sospettati.

How long does it take?

Twelfth Knife si svolge nell’arco di dodici notti. La prima notte si sblocca il 13 dicembre e ogni sera si apre una nuova testimonianza fino alla Vigilia di Natale. Il finale e la resa dei conti arrivano con la dodicesima notte, la Vigilia di Natale. Calcola circa 15–20 minuti a sera.

Do I need to print anything?

No. Ogni testimonianza e ogni porta chiusa a chiave si aprono nel browser, su smartphone, tablet o portatile.

What if I get stuck?

Every case includes a built-in hint system and a full solution, so you're never truly stuck.

Can I play it more than once?

Each case has one solution, so the reveal lands hardest the first time. Plenty of detectives go back through the evidence afterwards to catch what they walked straight past — and when you're ready for a fresh investigation, there's a whole library of cases waiting.

What device should I use?

Qualsiasi smartphone, tablet o portatile con un browser web. Su iPad, aggiungilo alla schermata Home e si gioca come un’app.

What age is it suitable for?

Consigliamo Twelfth Knife dai 15 anni in su. È un giallo con temi maturi, quindi è più adatto ad adolescenti più grandi e adulti.

Didn’t find your answer?

Don't hesitate to contact us