The Objet D'Oom was the jar containing Euphemia, the first Scarlet Empress of Hyspero.

It was stolen from the catacombs of the Scarlet Palace by Terrance. Somehow, the Objet became part of the Begins at Home's junkheap.

The Dog Pirates and Anthony Marvelle required the Objet to open up the Ringpull. The pirates attacked the Begins at Home, but Terrance sent the Objet off the ship towards Darlington with his dying breath. The Objet ended up in the care of Simon. While Simon was away, Marvelle stole the Objet from the Great Big Book Exchange. (PROSE: Enter Wildthyme)

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