Prepare a weapon of vengeance using the knowledge you attained at the greatest price

From Fallen London Wiki
A player-created Guide is available for this content: Ambition: Bag a Legend (Guide)
A player-created Guide is available for this content: University Laboratory (Guide)

How are the above links here?

Spoiler warning!
This page contains details about Fallen London Actions.

From: Begin a Scientific Investigation

You turned back from the Gate, but you did not forget.

Game Instructions: This will not destroy your Seven-Fold Knock.

Unlocked with Ambition: Bag a Legend! 400 - 450, 1 x The Seven-Fold Knock, Traces of Veils of the Third City 2

Locked with Experimental Object, Armed with the Jaguar Blade



Veils of the Third City is […] of the Well and the starving kings […] betrayer […]

[…] weapon must kill that which Is-Not, at a time other than the present […]

But you have learned the secrets […] You have paid an impossible price many times over.

Description summary:
Veils of the Third City is the Veils of hunger and betrayal and the Well. You know its story well enough to kill it.

[Find the rest of the story at]

Conclusion: Complete a Jaguar Blade or Complete a Jaguar Blade Wailing with Hunger