A mysterious message written in blood. A forgotten machine buried beneath London. A countdown that could erase everything.

In the heart of Victorian London, cabinet ministers vanish, strange symbols appear in alleyways, and whispers of an impending catastrophe ripple through the fog. When a murdered beggar leaves behind a chilling message—"The city has 25 days to live"—Sherlock Holmes is pulled into one of the most dangerous and personal investigations of his life.

As Holmes and Dr. Watson follow a trail of lost journals, secret societies, and sound-based technology tied to a forgotten empire, they uncover a plot that threatens not just lives, but memory itself.

At the center is a man thought long dead—Vikram Varma, a brilliant and unhinged mind seeking to unleash The Final Doctrine: a system of erasure that could destroy the city's collective soul.

From séances in abandoned cathedrals to hidden machines humming beneath Blackfriars Bridge, Holmes must confront not only the truth but the terrifying idea that he may be forgotten before he can stop it.

A psychological crime mystery filled with suspense, secret cults, and a deadly countdown, this standalone novella will leave readers questioning the cost of knowledge—and the power of memory.