How to Solve a Murder Mystery Puzzle: The Elimination Method

People tell me the same thing about whodunit puzzle books: "I love the idea, but I get lost after the third clue." Here's the good news. Solving a murder mystery puzzle isn't about being a genius detective. It's about method. You don't find the killer. You remove everyone who isn't.

This is the method I'd hand to anyone opening a case file for the first time.

1. Make a suspect list you can mark up

Before you read a single clue in detail, write every suspect down: one line each, with room to scribble. A notebook works. So does a printed grid. What matters is that every name has a place where you can write "out" and why.

That "why" is the habit that saves you later. When you get stuck, you'll want to check whether you crossed someone off for a real reason or just a hunch.

2. Sort the clues before you use them

Not all evidence is equal. Read through everything once and sort it into three piles:

• Hard facts. Physical evidence, records, times, places. These rarely lie.
• Statements. What people say. Useful, but people can be wrong or lie.
• Atmosphere. Details that set the scene but may not rule anyone out.

Start with the hard facts. They do the most work with the least risk.

3. Look for absolutes first

The best clues are the ones that remove several suspects at once. Things like:

• The shot was fired by someone left-handed.
• The killer had a key to the building.
• Whoever did it was in the neighborhood after 9 p.m.

Each absolute is a filter. Run every name through it. If someone can't match it, they're out. Write down which clue removed them.

4. Use alibis like a timeline

Draw a simple timeline of the evening and place each suspect on it whenever a clue tells you where they were. Two clues that put the same person in two places at once? That's either a mistake in your notes or a lie. Both are worth knowing.

5. Handle the liar carefully

Many puzzle mysteries hide one witness who lies. This is where people panic, but it's actually a gift, because a lie creates a contradiction you can test.

Try this:

1. Pick a witness and assume they're lying. Flip their statement to its opposite.
2. Follow the logic forward. Does it clash with a hard fact?
3. If it does, your assumption was wrong. That witness is telling the truth.
4. Move to the next witness and repeat.

Usually only one choice keeps every hard fact intact. That's your liar, and their lie often points straight at what they're hiding.

6. Re-check every cross-off at the end

When you're down to one name, stop. Go back through your list and read every "why". Is each removal based on evidence, or on a guess? A good puzzle is built so that the last name standing is the only one no clue can remove. If two names survive, one of your cross-offs is wrong, not the puzzle.

7. Don't rush the reveal

The fun is in the moment the last name stays on the page. Give yourself that moment before you flip to the solution.

Practice on a real case file

I wrote It Wasn't Yamara for exactly this kind of reader. A man was shot in my doorway, and the whole hill says it was me. Thirty-five neighbours, twenty-nine pieces of evidence, including ciphers, ledgers and photographs, and one witness who lies. Your job is the method above: cross them off until one name is left.

If you'd like to try the format before buying the book, the free Sealed File is waiting here. And if you prefer to listen, the Grand Hill Files episodes on YouTube tell the stories around the case without giving away the killer.