Founded in the autumn of 1872 by Dr. Cornelius Ashworth Blackwell in the parlour of No. 14 Greymantle Crescent, the Midnight Society was established as a brotherhood of enquiry into the human capacity for deduction, misdirection, and dramatic narrative. What began as a modest gathering of eight gentlemen of curious disposition has, in the span of twenty-one years, grown into a Fellowship of considerable distinction.

Dr. Blackwell, a retired surgeon of the Crimean Campaign, had observed during his years of military service that men in extremis demonstrated remarkable abilities to read one another's intentions — abilities he believed could be cultivated as a formal discipline. “The mind,” he wrote in his celebrated monograph, “is never more alive than when it is made to doubt itself.”

“The mind is never more alive than when it is made to doubt itself.”
— DR. C. A. BLACKWELL, 1861

The Society's early meetings took place under conditions of considerable secrecy, a tradition the Fellowship maintains to this day. Members convened at irregular hours, in locations communicated only by cipher, to engage in what Dr. Blackwell termed “investigations of social acuity.” These investigations — elaborate affairs involving assigned roles, concealed motives, and the systematic unravelling of falsehood — drew participants from every stratum of learned London society.

By 1878, membership had grown to include several Members of Parliament, two Lord Chief Justices (in an unofficial capacity), a celebrated actress of the Lyceum, and no fewer than four Fellows of the Royal Society. The breadth of membership was by design: Dr. Blackwell held that the science of human deduction was blind to rank, and that the drawing-room was the truest laboratory.

Born in 1831 in Shropshire to a family of solicitors, Cornelius Ashworth Blackwell demonstrated from an early age an unsettling gift for reading the intentions of those around him. His mother, who kept a detailed diary now held by the British Museum, recorded that her son could “identify a lie at the distance of a drawing-room, and a secret at no greater distance than a handshake.”

Educated at King's College London in the Faculty of Medicine, Blackwell qualified as a surgeon in 1853 and promptly volunteered for service in the Crimea. It was in the field hospitals outside Sebastopol that his peculiar gifts found their fullest expression. Blackwell developed a system of reading facial expression, posture, and vocal cadence to diagnose deception, which he applied, controversially, to the interrogation of prisoners.

Returning to London in 1856 consumed by a singular obsession, Blackwell spent five years in retreat, producing in 1861 his remarkable and divisive monograph “On the Legibility of Human Intent: A Systematic Enquiry.” The work drew significant controversy from the Royal Society, who found its conclusions insufficiently mechanistic, and considerable admiration from literary circles, who found them insufficiently implausible.

Blackwell served as the Society's President without interruption until his death in 1889 at the age of fifty-eight. He is interred in Highgate Cemetery, where his epitaph reads, fittingly: “He read the room.”

The current President, Mr. Reginald Forsythe-Black, Q.C., has continued the tradition of vigorous intellectual inquiry that Blackwell established. The Society's proceedings, though not publicly documented, are believed to have influenced the methods of more than one celebrated detective of the current era.

Over twenty-one years, the Society has convened upon no fewer than three hundred occasions. A selection of the more celebrated Convocations is reproduced below for the edification of the membership.

• The Whitmore Inheritance Affair (1875) — Eight members, three days. A matter of disputed succession, a forged will, and a butler who knew far more than he admitted.
• The Countess Elspeth Matter (1879) — The Society's first Convocation to include a lady of rank in the central role. The Countess proved, by unanimous verdict, the most accomplished dissembler in the Fellowship's history.
• The Callowell Steam Company Deception (1883) — Widely regarded as the most technically demanding Convocation yet undertaken. Fourteen participants, five concealed roles, and a floor plan of unusual complexity.
• The Thurlow Correspondence (1886) — A purely epistolary Convocation conducted entirely by letter over a period of six weeks. The murderer was not identified until the final post.
• The Midsummer Night Affair (1890) — Conducted outdoors, in the grounds of a member's estate in Hampshire, over the course of a long summer evening.
• The Venetian Commission (1892) — The Society's first international Convocation, held in Venice. Proceedings were conducted in three languages simultaneously.

Full records of all Convocations are held in the Society's archive, access to which is available to members in good standing upon written application to the Secretary.