No Quiet Nights Christmas murder mystery advent calendar by Grant Mercer front cover

24 cases. One hidden mastermind.

A Christmas countdown for your inner detective.

Christmas is coming to Pocket Green Village. The case files keep opening.

Behind every investigation is another victim, another cast of suspects—and a killer waiting for you to make the right deduction.

No Quiet Nights is a Christmas murder mystery Advent calendar featuring 24 illustrated logic puzzles. Solve one case a day as Christmas approaches, or keep investigating whenever the next mystery proves too tempting.

Your task is to reconstruct each crime scene. Study the clues, examine the colourful village plan and work out where every character belongs. Like Sudoku, no two characters can share a row or column. When everyone is correctly placed, the suspect alone with the victim is the murderer.

Then comes the mystery behind the murders.

Numbered wax seals appear in selected investigations. Solve the cases, uncover their hidden message and use what you have learned to unmask the mastermind.

Inside your detective’s casebook:

24 murder mystery logic puzzles, each with a unique solution.
Four difficulty levels: Easy, Medium, Hard and Expert, with increasingly demanding investigations.
Full-colour village plans and illustrated characters to bring each case to life.
Clear rules and a worked example to help you get started.
Three progressive hints for every case, so you can choose how much help to reveal.
Illustrated solutions to check your deductions.
A final mastermind challenge and Detective Diploma to complete your investigation.

The generous 8.5 × 11-inch format gives you room to study the scenes and work through the evidence.

A Christmas gift for adult mystery lovers, Sudoku enthusiasts and anyone who enjoys a satisfying screen-free challenge.

Book 16 in Grant Mercer’s Murder Mystery Mayhem series. No previous books required.

Open the first case file. Can you solve all 24 murders—and discover who was behind them?

Theme 7: This theme is Sudoku grid style with graphical representation of Suspects and objects. The puzzle layouts are divided into rooms with objects which suspects can and cannot be placed on. When a suspect is placed all the grids in a horizontal and vertical directions are crossed off the puzzle grid. To solve the puzzle, you need to logically determine the order to solve the clues in to locate where the victim is to be placed on the final vacant square with a suspect in that room, and the suspect in the room is the Murderer.
Grid sizes can be varied from 6x6 to 16x16, along with number of suspects to logically deduce from the clues who is the murderer.

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Book 16 of the Murder Mystery Mayhem Series