A tangled mystery unfolds around a missing valuable necklace and a series of cryptically drawn daggers sent by post. The investigation centers on a middle‐aged gentleman, whose household has become the stage for a covert exchange of signals among conspirators. Initially, heated debates arise between two men over the evidential value of one “obvious” explanation versus a more intricate one. Soon a clergyman, formerly in holy orders and now a victim of these peculiar missives, enters the narrative. The post–marked envelopes bearing sketches of daggers create unease: one letter contains a drawing of a single dagger executed with an uncertain hand, while subsequent envelopes show two or even three daggers drawn with greater confidence. These emblematic images are not instruments of mere violence but rather deliberate signals—heraldic clues intended to communicate silently. Within the household, the mystery deepens when it is revealed that the missing necklace, bequeathed by a wealthy father to his only daughter—who is believed to be in protective custody—has vanished under suspicious circumstances. The young heiress, originally presented as the daughter of an influential friend, is later found to be entangled in a deception: she has arranged a covert substitution by recruiting a lower‐class companion to pose in her stead at home. This impostor, whose native accent betrays her origins, is eventually unmasked when subtle differences in speech and behavior, as well as the impeccable order of her quarters (more appropriate to a maid than a lady), suggest a ruse. The puzzle is further complicated by the arrival of telegrams and intercepted communications. One signal, conveyed by a drawing of three daggers—a stark departure from the earlier sketches—announces an event of great consequence: a wedding that has already taken place. Analysis of the dagger sketches, in light of heraldic designs and personal crests, directs suspicion toward a young man associated with the Danvers family. The symbolic reference is not random; it is a deliberate allusion to arms borne by a key conspirator. In fact, the investigation reveals that the heraldic cross drawn in the daggers corresponds to the crest of the very family implicated in the clandestine transactions surrounding the necklace. As the inquiry progresses, the household itself becomes a microcosm of deceit. The gentleman’s wife and his nephew are both drawn into a conflict of interest between protecting reputation and pursuing a transparent inquiry. The unreliability of Miss Monroe—the young lady supposedly under the guardian’s protection—and the articulate sleight of hand by her impostor, complicate the path to the truth. The complex interplay of secret telegrams, misdirected correspondences, and a meticulously arranged schedule of clandestine meetings sets the stage for an unraveling of the conspiratorial network. Central to the unraveling is an investigator who methodically surveys the house and interrogates servants and family members alike. Her penetrating observations reveal that the coded signals embedded in the dagger sketches are part of a prearranged system designed to inform conspirators of developments, such as key movements by the implicated parties and changes in the status of the necklace. By scrutinizing details—from the style of handwriting on the envelopes to the peculiarities of room décor that betray the hand of a professional maid rather than an independent lady—the investigator dismantles the façade that has long concealed a web of fraud, deceit, and secret liaisons. Ultimately, it is disclosed that the elaborate signals were not sent by hostile secret societies but were orchestrated by those within the circles of high society to manage and communicate their covert transactions. The lost necklace, now traded through channels involving diamond merchants in a far-off port, stands as both symbol and motive for the entire machination. Caught in the cross-firing of telegrams and forced to confront the reality of a secret marriage and a premeditated fraud, the guardian finds himself overwhelmed by the implications of betrayal and the realization that each seemingly isolated event was purposefully orchestrated toward an inescapable conclusion. In summary, the narrative traces the step‐by‐step unravelling of an intricate plot where elegant signals mask ruthless calculations. Cryptic drawings, clandestine correspondence, and a meticulously engineered switch of identities converge to expose a duplicitous plan revolving around the loss and subsequent manipulation of a cherished family heirloom.
By Catherine Louisa Pirkis · First published 1900 · Genre: Mystery, Detective Fiction, Historical Mystery