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This page contains details about Fallen London Actions.

From: The Other Thing in the Other Chapel

Action Cost: 9

"We'll have to hunt him down," the Professor confides […] "It probably won't work. It usually doesn't. But the machine doesn't usually blow up. If it does, I'll send you an invoice, but you can reattach your own limbs."

Player summary:
Hunting down the Theorem is nearly impossible. The Professor takes no responsibility for any fatalities.

[Find the rest of the story at]

Game Instructions: This is terribly difficult, but the Theorem is extremely valuable.

Unlocked with Eye 9 x Sudden Insight, Enigma 49 x Searing Enigma

Challenge information

Broad, Owl Watchful 500

  • 342 - very chancy (41%)
  • 425 - chancy (51%)
  • 509 - modest (61%)
  • 592 - very modest (71%)
  • 675 - low-risk (81%)
  • 759 - straightforward (91%)
  • 834 - straightforward (100%)


A successful Theorem-Hunt!

[…] If you understand the Professor correctly […] the Theorem tried to escape into Parabola […] but the Truthbreaker Turbine's assault blinded and deafened it long enough that you could imprison it... […]

You soak it up greedily. […]

Player summary:
With the Truthbreaker Turbine, the Professor and you succeed in capturing the Theorem. You soak up the rewards.

[Find the rest of the story at]


Truth burns!

A pillar of fire erupts horizontally from the machine. […] The last thing you remember before the darkness takes you is the Professor feverishly counting on her fingers.

Player summary:
The Professor counts up how much you owe for her invoice as the Turbine backfires and kills you.

[Find the rest of the story at]

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