An unaffiliated but very loving fan work of
Tamsyn Muir’s Locked Tomb books –
though you don’t have to have read them to play
Key Details
Who
14 x £75
2 x £30
16 players per run
Age 18+
Where
Chislehurst Caves
London, UK
BR7 5NL
When
Run 1: 19 Sep 2026
Run 2: 20 Sep 2026
10:30am – 7:30pm
*Not included: Food, travel, accommodation, costume, pre-written characters – but the Player Guide can help you sort everything you need
The Story
In the story we’ll tell, God has invited the scions of the Nine Houses to the temple of the First House to undertake a series of potentially deadly trials to discover who among them are worthy of becoming Lyctors, his saints, his hands and gestures, the elite few immortal necromancers of immense power who stand at his side.
Half of the you will play the necromancers who have been summoned here and the other half will play their cavaliers, sword fighters of tremendous renown bound together with the oath, “one flesh, one end”. The trials will test their skill in their respective arts, yes, but more than that: they will test the bonds between them. And frankly, some of their bonds are a mess.
The larp is about revelling in the gothic excess of being space necromancers and dashing duellists while teasing through torrid and dysfunctional character dynamics – often queer, optionally romantic, always intense. But relationship drama isn’t the only thing lurking in the dark halls beneath Canaan House – there are skeletons in closets and secrets to uncover that are far older than any of you.
Learn more about the story and setting in the Player Guide.
The Experience
Play in a tweaked-but-spoilery version of the Locked Tomb setting
Play paired characters, a necromancer and their sworn cavalier
Create your own characters, make your own relations
Undertake trials to explore your characters’ connection to each other
Uncover secrets that have been hidden for millennia
Have big emotions and cry over each other in the dark
Maybe die tragically in a way that’s out of your control
Play as a ghost with unique stuff for the dead to do
Play to lift and be lifted by other players and NPCs
Collaborative, theatrical action scenes, no offgame skill required
Get transparency if it helps you, or secrecy if you prefer
Learn more about the play experience in the
Player Guide
The Venue
Our venue is the dramatic Chislehurst Caves, a maze of subterranean twists and turns that are perfect for getting lost as you uncover necromantic secrets and navigate the darkness of the world.
The caves are a simple 30 minute train ride from London, so you can easily take in the sights or see a show the night before and make it to the larp on time.
Learn more about the venue and how to get there in the Player Guide
Characters
You’ll create your own characters and design your own drama ahead of the larp alongside your House partner, with character prompts available if the idea of starting with a blank page is intimidating. It’s up to you how deep you go: if all you start with is a House stereotype and a vague vibe for your necromancer/cavalier duo, there will still be plenty for you to do.
You’ll also create your own relationships before the event, reaching out to other players on Discord, Facebook or whatever else the kids are using these days. If your character is a social butterfly or has a closet full of metaphorical skeletons you’re welcome to set up a soap opera of a backstory, but it’s also just fine to play a relative stranger or a total unknown, meeting people for the first time and sizing them up under these extraordinary circumstances.
Learn more about creating characters in the Player Guide
Food and Drink
There is no food provided at the larp, but the Player Guide can help you figure out where to get some on the way if you’re travelling in from out of town – you’ll only need lunch and snacks for the day.
We invite anyone who can to treat lunch as part of your costume and bring food with you that’s appropriate to their House. We’d love it if we sit down for lunch and the Fifth lay out a hearty picnic while the Second crack open some rations and the Fourth try to hide the fact that they’ve smuggled in a bunch of junk food.
No alcohol can be consumed at the larp venue, but we’ll be heading to the pub afterwards.
Accessibility
This run of One Flesh One End is less accessible than we usually strive for in our projects. The caves are very cool but are rough hewn underground rock formations and have:
- Steps
- Uneven floors
- Low and uneven ceilings
- Uneven and occasionally sharp walls
- Minimal seating
- Areas of low lighting
- A constant chilly temperature of 13°C
- Damp, dust and mud
Recognising the barriers that people with access requirements can face in engaging with larps, we will be giving players the option of adding a donation to their contribution to help subsidise a later run of One Flesh One End in a more accessible location, and any unspent contingency funds from this run will go towards the same goal.
Sign up
Sign up is open until the end of the day on April 4th.
You can sign up with a partner you’d like to play with, or sign up solo and we’ll match you with someone who has similar preferences to you. Or want to play a spicy trio? Let us know!
Player spaces will be assigned House by House, so the more Houses you’re interested in playing the more chances you’ll have in the lottery.
A handful of spots are pre-allocated to people who have helped this larp come into existence.
Cancellation and Refunds
The money you give the organisers is a contribution towards the running of the event, and your spot can’t be resold.
If you need to drop out, the organisers will attempt to find someone else from the waiting list to take your place and cover all or part of that contribution, and if we can we’ll return what they are able to contribute minus any transaction fees that have been incurred.
Note that this is likely to be less the closer we are to the event, and that if you drop out after August 20th 2026 you will not receive any refund until after the larp.
If the organisers need to cancel the event, all players will get back a share of any of the unspent budget, proportional to their contribution.
Meet the team
Joanna led the design of the larp, and kept relentlessly changing things every time she decided “it doesn’t let the players do enough dramatic emo shit”.
Jake led the larp’s writing, and is delighted to cast you all as actors in his little play. He’s responsible for all the swears, even the ones he didn’t write.
Lisa is a spreadsheet artist and email magician. It’s not sexy work and it doesn’t get enough credit, but without it, larp descends into chaos.
Contact the organisers at luminouslarp+ofoe@gmail.com