This December, your next Christmas surprise is a crime scene.

Open The Advent Case Files and solve a new fictional murder case each day from 1 to 24 December. From a candle workshop to a mountain rescue station, read the story, examine the scene and follow the evidence until you can name the killer.

Murder Mystery Puzzle Book - The Advent Case Files is an Advent calendar book for adults that combines detective stories with Sudoku-style logic puzzles. Each case includes a short story, an illustrated crime scene on a 9×9 grid, nine people including the victim, and clues to their positions.
Work out where everyone belongs, connect the evidence and identify the murderer. Every case has a unique logical solution, so each deduction brings you closer to a verdict you can explain.

What is inside?24 fictional murder cases for a daily Christmas puzzle, from 1 to 24 December.
Illustrated crime scenes that give each investigation its own setting and spatial challenge.
Sudoku-style logic puzzles in which you place people on a grid using the evidence.
Cases that grow more demanding as you progress through the book.
Two levels of hints for every case, so you can choose how much help to use.
Complete solutions with everyone's positions, the culprit and an explanation of the deduction.
Full instructions to help you understand the format before opening your first case.

Explore a historical printing works, a cathedral or a steamship. Study the layout and use the clues to rule out impossible positions. A detail that seemed unhelpful may become the key once you have placed another person.

If you enjoy logic grid puzzles, detective stories or brain teaser puzzles for adults, this Christmas puzzle book brings them together. The challenge is to place people in the illustrated scene using logic, with each story giving the investigation a purpose.

When you need help, choose a gentle nudge or a more specific hint. You decide when to consult them and how much of the mystery to unravel yourself. After reaching your verdict, check the complete solution to see where everyone belongs and how the clues lead to the answer.

A Christmas gift with something to solve
Looking for gifts for mystery lovers? This puzzle Advent calendar offers a fresh investigation for each day of the countdown. Enjoy a quiet puzzle break, give it to a detective fiction fan or compare deductions with someone else.

Follow the daily Advent calendar or solve the cases at your own pace. Open The Advent Case Files and make room for a little mystery this Christmas.