Why You'll Love It
A premium boxed kit, beautifully made
Scales to suit your guest list
Host at the table or online
A different culprit every play
Host guide, characters, clues & audio
The kit does the hard work for you
Vendor:Masters of Mystery
Boxed Game Kit
Why You'll Love It
A premium boxed kit, beautifully made
Scales to suit your guest list
Host at the table or online
A different culprit every play
Host guide, characters, clues & audio
The kit does the hard work for you
More in this vein: Halloween Murder Mystery Games — or browse the full range of murder mystery games.
Haunted House Murder Mystery Game – Boxed Edition
1.5 - 3 Hours
Medium
Halloween at Monster Mansion, somewhere on a lonely moor
Flexible
The Kit
The Guest List · Mystery At Monster Mansion
Every guest becomes a character. Choose your edition by how many join the party — the bigger the night, the deeper the cast.
Want every suspect at your table? Pick the 4–20 edition.
Free with every game — never required
Every kit is complete on its own — and every game now includes a free app. Use it, and it sends cinematic invitations, slips each guest their secret script, and quietly casts the killer.
Cast your guests and the app sends each one a cinematic invitation — their character, their costume brief, and an RSVP that fills your table for you.
Before the party, each guest steps into the green room — their character portrait, their backstory, their costume, and lines only they can see.
One tap, and someone in the room becomes the murderer. Only their phone knows. They read the guilty lines; everyone else plays it straight. Nobody can spoil it — not even the host.
Tap-to-examine evidence lands each round, the Detective's recordings set the scene, and when it's time, a synchronized countdown unmasks the killer on every phone at once.
More ways to play
Snap a photo in costume and it becomes your character's face — on the ballots and at the reveal.
Every guest's photos and videos collect in one shared party album — to relive the morning after.
Run the night as the Detective, or play a character yourself and let the app's recordings narrate.
Vote on the honours — Best Detective, Best Costume, Best Liar — and crown them together at the end.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
Delivery & Downloads
Your digital game is delivered instantly — the moment your order is confirmed, your full kit is ready to download. There's nothing to wait for and nothing posted. Physical boxed kits are dispatched within 1–2 working days.
Hosting Support
Every game comes with a step-by-step Host Guide, so you're never on your own. Still stuck? Our team are real mystery enthusiasts and reply within 24 hours on weekdays.
FAQs
Player numbers, timings, how to host virtually — most questions are answered on our Help & FAQs page. Take a look before your big night.
Contact Us
Prefer to talk it through? Send us a message any time and we'll help you choose the perfect mystery for your group.
Host A Murder Mystery Dinner Party
Suspects
Pick the game version that suits your guest list, whether you’re planning a small murder mystery dinner party or a larger Monster Mansion-themed gathering.
Invitations
Invite your guests and send each person their character details and costume ideas before the party begins.
The Scene
Add dinner, drinks, costumes or decorations to create the perfect Monster Mansion atmosphere. Keep it simple or go all out.
The Case
Start with the Detective’s opening statement, then let guests introduce their characters, mingle, gossip and begin uncovering secrets.
The Murderer
After the first round, the murderer is secretly selected, meaning the mystery can unfold differently each time you play.
Investigate
Follow the host guide through rounds of motive, opportunity and method as guests question each other, reveal clues and try to catch the killer.
Accuse
Everyone makes their final accusation before the murderer confesses. End the night with awards for best detective, best costume, best performer or most suspicious guest.
Plan a night to remember
Match the mystery to the guest list. Compare themes, player counts and languages, then choose the games for your next occasions.
Choose by theme and group size
Build your bundle
Buying it for someone else? After checkout, send it straight to their inbox as a gift — with a personal message, scheduled to land on the big day. They open a cinematic reveal, unlock the game, and the night is theirs to host.
Birthdays, Christmas or a date night in — choose the boxed kit and a beautifully made game arrives at their door — or send the digital edition straight to their inbox.
Welcome to our dedicated section for all things murder mystery! Here, you'll find everything you need to create an unforgettable and immersive experience for your guests. Whether you're looking for menu ideas to tantalize taste buds, curated playlists to set the perfect mood, costume ideas to bring characters to life, or decoration tips to transform your space, we've got you covered.
Planning to host this game at a paid or ticketed event, a corporate away-day, a pub or restaurant night, a team-building session — or anywhere it forms part of a business? You'll need a Commercial License.
It gives you the rights to run our mysteries for profit — at your venue, for your clients, or streamed publicly — professionally and fully covered. Add it to any game from £165. Already bought the game on its own? Purchase it again with the license and we'll refund your original order.
Please read our FAQs page to find out more.
No — every kit is complete on its own, and you can run the whole night from the booklets alone. The free app is a bonus that adds cinematic invitations and a spoiler-proof secret killer draw if you'd like it. Use it for every guest, just a few, or nobody at all.
Overall rating: 4.8 / 5 from 135 reviews.
It was so much fun and what an amazing time for friends ds to get to gether and have so much fun looking forward to Christmas now
BEST HALLOWEEN PARTY EVER!!! Fun and easy to follow, loved the extras that came in the kit, and the character selection was perfect!
We love playing these mystery games every year for our birthdays. It’s such a fun time!!
IT WAS AWESOMELY FUN!!!!
It was a great time! Everyone dressed up, mingled (as monsters), and did their best detective work. The game itself was easy to run and simple to follow along with. 10/10!
This was my 4th annual murder mystery and every year it’s a hoot! Thanks for being my one stop shop year after year with new games and murder mystery surprises. My friends and family love how I host every Halloween!
Wir hatten viel Spaß und konnten den Skripten gut folgen. Ein Stern Abzug, da die Einladungen in der deutschen Fassung fehlten. Ansonsten gerne wieder mit anderen Themen, vielen Dank.
We loved it. I ended up buying up to 14 and then getting the add on for up to 20. 20 people was too much. I definitely suggest a smaller group 8-10. We all still had a blast. I would definitely purchase another one.
All worked out so well. Package and instructions very well worked out. Everybody (except the guilty person) was guessing until the end and he was so good NOBODY caught him!
What a great set! Everything we needed to pull off our first Mystery party. Excited to do another!
A great and well rounded alternative to a murder mystery. Enjoyed it a lot and so did our guests! I like that the host can join in with the mystery
We had a great evening playing Monster Mansion. It was nice to have the box with everything printed ready to go. We have done digital which are great but this did make life easier. Super easy for follow and a great script
Great evening, have played it twice now with different groups and just as much fun the second time around. Animated host recording to guide you through the game is really fun and the character books are easy to follow. We got the 20 player version so loads of options for different monsters and costumes.
It was really fun with the theming and characters. Everyone had fun dressing up and having their own character to play. The only con I would say is that we actually got through it quite quick for a group of 7. I wish there were more rounds to interact and give statements as well as maybe more physical evidence. However, we all had a really fun time playing it :)
Lot's of fun!!
We absolutely loved this game!!!!! ❤️❤️❤️
This is a fun experience! We truly enjoyed it!
I host my daughter 14 birthday party and was super easy using the videos and using all the information provided.All the girls had so much fun getting into character and acting! I will recommend the game and even thinking now on getting the Christmas one 😆Thanks!
I hosted my first Halloween Murder Mystery. It was an absolute blast. Once we got a hang of how things worked it was smooth sailing. The story line made it a little difficult to figure out who the murderer was. There wasn't much mystery it was more of the wording that set the killer apart. Everyone was begging me to host a Christmas Murder Mystery after we were done so I say it was a big hit either way. We also have friends that refuse to read aloud but once they saw everyone else do it, they ended up reading and having fun!
I hosted a murder mystery dinner party for my birthday this year using the Monster Mansion kit. We had a big group playing -18 of us-and everyone had a blast. We let people pick their characters in advance and then had all other materials available when they arrived. Loved that it required minimal prep from participants and that the host could play as well. My friends are still taking about it! The game took us the full 2.5 hours from start to finish. Beware-it’s a lot of printing! I would absolutely purchase another storyline to do.
Pour une soirée Halloween réussie mais il faut que tout le monde joue le jeu. Nous avons découvert les talents d'acteurs de certains et c'était vraiment très drôle !!! Seul bémol : impossible de trouver le coupable les réponses sont trop subtiles et difficiles je trouve. Mais nous avons passé un super moment.
Facile à mettre en place Amusant Niveau de difficulté ok Superbe animation pour un repas entre amis
Such a fab Halloween theme, everyone got really involved and we had a great night
We hosted our murder mystery as a Halloween party. We created a FB event and let our guests decide whether to participate or not. Some opted to come as outcasts and enjoyed watching the rest of us play the game. Was a hit!
We did this with our High School/Middle School Drama Club and had a blast! The only suggestion would be to have more open-ended clues without such specific questions. More character background would be helpful too. This is the second company we've used for our Mystery Dinner Theatre, and I will definitely be back to look at other shows in the future.
Game was easy to setup and follow but not much difference between the guilty and innocent scenario making it very hard to guess who the culprit was. The game left little room for improvisation - good for a first experience!
What an amazing night! We had so much fun! We will definitely do this again!
We really enjoyed having scripts to read off of and the flow of the 3 rebounds. What could have made this better would be specific evidence if one person is guilty. The guilty person’s scripts didn’t really lead anyone to believe it was them any more than an innocent person’s scripts did. We had 16 people and it took 1.5 hours, which was the perfect amount of time. Overall, a great way to have a party with your friends or family. It was a ton on fun and easy to follow for everyone.
We had an absolute blast playing - Had a virtual team of 20 and it took us about an hour and a half. Will do another one soon!
Really nice, only thing is that we played in real life so its was no online (like the game).
Everyone enjoyed. This was my second purchase. Easy to follow and loads of fun, when people play the character makes it become so much more real.
We had a great time dressing up. The character profiles gave us lots to play with for the costumes. The whodunnit it was fun but there was not an opportunity to mingle and get secrets from each other like in other games we’ve had from this company before. It was three rounds of group questions and answers so it went quite quickly.
We had a good time with this party! Definitely want to do another one already!
We had so much fun! This mystery was easy to plan and put together. Thank you!
Good Game
Great family horror party in Wales
We had a great night - a lot of fun dressing for the characters and trying to keep the accents - will definitely do another soon
My whole family dressed up for this dinner party! The two on the right added a pirates theme along with the Frankenstein theme. Which is why I think it works so well is you can add in another character if you have a small group. The game was great to lead and hilarious when introducing ourselves. I’d play again it gets easier the second time around I’m sure.
Everyone showed up in character and had a blast
This was so much fun! Love how the guilty person can be chosen at random making it so we can play it again and again!
