
On the night before a wedding, Walter finds himself on the veranda, savoring a solitary cigarette and the glow of a full moon over the ocean. Though his friend Sinclair is the one about to be married, Walter is quietly nursing a long‑held affection for the bride‑to‑be, Dorothy, whose delicate pride has always been a secret he kept close. The quiet reverie is interrupted when Sinclair rushes to Walter, his usual confidence replaced by a palpable anxiety that hints something terrible has happened.
Sinclair confides that a small, exquisitely crafted amethyst box—once a curiosity he proudly displayed—has lost the single vial it contained, a concoction described as the deadliest drug ever made. The loss threatens not only the impending celebration but also the safety of those around them, and Walter is thrust into a delicate dilemma: help his friend recover the lethal substance or protect the fragile hopes he harbors. As the two men slip away from the bustling house, the night’s calm gives way to a tense race against an unseen danger, leaving the listener wondering how far loyalty and love will stretch when a single drop can change everything.
Language
en
Duration
~4 hours (279K characters)
Publisher of text edition
Project Gutenberg
Credits
Produced by Chris Curnow, Michael, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net
Release date
2011-02-28
Rights
Public domain in the USA.

1846–1935
Often called one of the pioneers of detective fiction, she helped shape the mystery novel long before the genre was fully established. Her stories introduced careful plotting, memorable investigators, and the kind of clue-based suspense that later became a hallmark of crime writing.
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