How to Prepare for Your First MortalCase Murder Mystery Party

Preparing your first MortalCase murder mystery takes an evening, not a fortnight, once you do things in the right order. Read the Host Guide once. Put the 2 spoiler documents in a folder you don't open. Cast the 8 required roles, send each guest their own private guide, print the evidence and skip printing most of the rest. Then plan the first 10 minutes, which is the part that decides how the night feels.

There’s a particular moment, a week or so after buying your first murder mystery, when you open the folder properly for the first time and think: that’s a lot of files.

It isn’t as much as it looks. Most of it is material you’ll print and hand out without ever needing to understand it in detail, and the part you have to know is 1 document long. What follows is the order to do things in, so that preparing your first party takes an evening rather than a fortnight of low-level worry.

Read the Host Guide once

Start here, before you open anything else, and read it the way you would read a recipe rather than a contract. You aren’t memorising. You’re finding out what happens and in what order.

By the end of it you should be able to say out loud: the guests arrive, I open the game, they talk, 3 murders happen at points I control, everybody votes, the Reveal ends it. If you can say that, you have understood the game. Everything else is logistics.

Do not read it 4 times. Hosts who reread instead of preparing are usually looking for a certainty the guide can’t give them, because the thing they’re nervous about is the room, not the file.

Separate the safe files from the spoiler files

Do this second, and do it before you get curious. Make 2 folders on your computer.

Everything except the Evidence Walkthrough and the Reveal goes in the safe folder: the Host Guide, the timeline, the Combined Character Bios, the invitations, the Character Guides, the evidence itself, the cards and awards. Those 2 spoiler documents go in the other folder, and you leave it alone.

That single act of filing is what lets you play your own party. It’s much easier to not read something that lives somewhere else. If you would rather know everything in advance, that’s a legitimate choice too, but make it deliberately rather than by clicking the wrong file at 11 in the evening.

Cast the 8 required roles first

Every MortalCase game has 20 characters: 8 required Primary Characters who carry the story and the 3 murders, and 12 optional Secondary Characters you cast as your guest list allows. So cast the 8 first, and cast them from the Combined Character Bios rather than by opening private guides. Give the Primary roles to the guests you’re most confident will read their material, because the story depends on those 8 turning up prepared. Then fill Secondaries with whoever else is coming.

Secondary doesn’t mean decorative. Every character has a reason to be in the room and something to do. It means the evening still works at 10 guests, which is the flexibility you want the week before the party when 2 people drop out.

Send 1 private guide to each guest

Each guest gets their own Character Guide and nobody else’s. Send them individually, not in a group thread where somebody will inevitably open the wrong attachment. Deciding who plays which character comes first, and there’s a method for it.

Send them early enough to be read. The single biggest difference between a slow first hour and a fast one is whether guests opened the file before they arrived, and the week before isn’t too early.

Say 1 sentence about what the guide is: it’s private, it takes a few minutes to read, and there’s nothing to memorise. Guests who are told that read it. Guests who receive an unexplained attachment called Character Guide often don’t.

Decide what deserves paper

This is where first-time hosts either save an afternoon or lose one, and it’s worth being honest about: printing everything in colour at a copy shop is an errand and a stack of paper you have to sort afterwards. You don’t have to. The things that want to be physical are the evidence, because guests need to pick it up and pass it round, and the voting cards. Character Guides can go to guests digitally and be read on a phone. The Host Guide and timeline can stay on your screen, or be the 1 thing you print for yourself.

Print the evidence in colour if the budget allows and everything else in black and white. Nobody has ever noticed the colour of a voting card.

Choose optional material with a job

The Expansion Kit adds Character Prompts, extra evidence, alibis, Gossip Notes, additional Action Cards, Detective material, and theme and party extras. The Core Game Kit is complete without any of it. Before any of that, what the invitation should say decides how prepared people arrive.

The way to decide is to give each piece a job. Prompts have a job if your group is quiet or new to this. Extra evidence has a job if you have a group who will want more to dig through. Alibis have a job if you want more contradiction in the room.

Optional material added because it came in the box is material you’ll spend an evening preparing and then not use.

Practice the handoffs, not the performance

You don’t need to rehearse anything you say. You aren’t performing, and the Character Guides mean the guests aren’t waiting on you for content. What is worth walking through once, alone in the kitchen, is the mechanics: how you gather everyone for a murder, where the evidence for each phase is stacked, how you take a victim aside without announcing it to the room, and how you collect the votes.

Those are the moments where a first-time host hesitates, and hesitation is the only thing that makes a murder mystery feel wobbly. The words don’t matter. Knowing which pile to reach for does.

Prepare the first 10 minutes

Guests arrive uncertain. Some have read everything, some skimmed it in the car, and 1 person has definitely not opened it at all. The first 10 minutes decide how the next 3 hours feel. If you’re printing the game at home, do the test page the week before, not the morning of.

Have a plan for that stretch. Drinks in hand quickly. A printed spare guide for the person who didn’t read theirs. A short opening that says how the evening works: there’s no script, talk to everyone, secrets are yours to protect, and something is going to happen.

Then give a first task so nobody is standing about waiting for permission. Meet 3 characters and find 1 Important Relationship is enough. A specific instruction moves a room faster than any amount of encouragement.

A theme can do part of that work for you. Your guests walk into GAME OVER – 80’s Arcade Theme on a tournament night at Atomic Arcade, where everyone’s there to compete over a new machine, so a first instruction lands as the reason they turned up rather than as a rule.

Know what ready looks like

Ready is a shorter list than you would expect. You have read the Host Guide once. The spoiler folder is closed. The 8 Primaries are cast and every guest has their own guide. The evidence is printed and sorted into 3 piles in murder order. You know how the evening runs and what you say in the first 10 minutes.

That’s it. If those are true, you’re ready, and anything else you do from here is decoration rather than preparation.

“This game pack is amazing! We had so much fun and it’s easy to follow along. There is plenty of info and support for hosts and guests. I can’t wait to use it again and buy more of the games for future events!”

Plan for 2.5–3 hours with a MortalCase murder mystery game, with give at both ends, so the evening you’re preparing for is one evening, not an endurance event. If you want the wider view of what preparation costs in time, see how much prep a MortalCase party really takes, or work through the murder mystery party planning checklist.

Your first one won’t be your best one, and that’s fine. It will still be the party people talk about for a year.