Active case
Disappearance of Dorothy Arnold
Documents ongoing investigation · suicide — written to inform, not to shock.

Dorothy Harriet Camille Arnold was born in New York City on July 1, 1885, to Francis R. Arnold, a wealthy importer of fine goods, and Mary Martha Parks Arnold. After graduating from Bryn Mawr College in 1905, she returned to her family's home at 108 East 79th Street and pursued a writing career, submitting short stories to McClure's magazine that were repeatedly rejected. Two months before her disappearance, her father refused her request to move into a Greenwich Village apartment to write.
On the morning of December 12, 1910, Arnold left home to shop for a dress for her sister's upcoming debutante party. She was seen by clerks at Park & Tilford and Brentano's bookstore, and spoke with a friend, Gladys King, outside the bookstore around 2 p.m., telling her she planned to walk home through Central Park. She was never confirmed to have been seen again. When she failed to return for dinner, her family grew alarmed; a friend who called that night was reportedly told, incorrectly, that Arnold had come home and gone to bed with a headache.
Fearing publicity, the Arnold family initially avoided contacting police, instead hiring a family friend and lawyer, John S. Keith, and later Pinkerton detectives, to search hospitals, morgues, and jails in several cities. Investigators found that all of Arnold's clothing except what she was wearing remained at home, along with burned papers believed to be her rejected manuscripts and literature about transatlantic ocean liners. The family did not file a formal police report until January 1911, when Francis Arnold held a press conference and offered a $1,000 reward.
The investigation drew attention to Arnold's secret romantic relationship with George Griscom Jr., a Pittsburgh engineer she had met at Bryn Mawr, with whom she had spent a week at a hotel in September 1910 under a false pretext to her parents. Griscom, questioned by Arnold's mother and brother in Italy, denied knowledge of her whereabouts. Police searched the Central Park Reservoir on her father's theory that she had been attacked and killed, but found nothing.
Numerous theories emerged over subsequent years, including accidental death, amnesia following a fall, suicide linked to her writing failures or troubled relationship with Griscom, death during an illegal abortion, and a claim by a convicted felon, Edward Glennoris, in 1916 that he had helped bury her body, which police could not substantiate. The NYPD formally concluded in 1911 that Arnold was likely dead but found no evidence of a crime. Alleged sightings and letters purporting to be from Arnold continued for years, all found to be false. Her father died in 1922, having spent an estimated $250,000 searching for her and believing she had been murdered; her mother died in 1928, reportedly still hoping her daughter was alive. Dorothy Arnold's disappearance remains unresolved.
Key facts
- Victims
- Dorothy Arnold
- Date
- 1905
- Location
- 108 East 79th Street, Manhattan, New York City
- Case status
- unsolved
Case timeline
1885-07-01
Dorothy Harriet Camille Arnold is born in New York City.
1905
Arnold graduates from Bryn Mawr College.
1910-09
Arnold secretly spends a week at a hotel with George Griscom Jr. after telling her parents she was visiting a former classmate in Boston.
1910-11
Arnold's second short story submission to McClure's magazine is rejected.
1910-12-12
Arnold leaves her family home to shop for a dress, is seen by clerks and a friend, and is not confirmed seen again.
1910-12-16
The Arnold family sends a telegram to George Griscom Jr. in Italy asking about Dorothy's disappearance.
1911-01
The Arnold family files a missing persons report with the NYPD.
1911-01-16
Arnold's mother and brother confront Griscom in Italy; he denies knowledge of her whereabouts.
1911-01-25
Francis Arnold holds a press conference announcing his daughter's disappearance and offers a $1,000 reward.
1911-02
NYPD announces it believes Arnold is dead but has found no evidence of a crime and stops active investigation.
1916-04
Convicted felon Edward Glennoris claims he helped bury a woman he believed was Dorothy Arnold; police excavations find no remains.
1921-04-08
Captain John H. Ayers of the Bureau of Missing Persons claims Arnold's fate is known, then retracts the statement the next day.
1922-04-06
Francis Arnold, Dorothy's father, dies, having excluded her from his will believing she was dead.
1928-12-29
Mary Arnold, Dorothy's mother, dies, reportedly still hopeful her daughter was alive.
Best coverage
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People
Dorothy Arnold
VICTIMNew York socialite and aspiring writer who disappeared on December 12, 1910; her fate was never determined.
citation on file
Places
Common questions
- What happened to the victim?
- Dorothy Arnold, a 25-year-old New York socialite and aspiring writer, vanished after leaving her Manhattan home to shop on December 12, 1910. Despite an extensive private and police investigation, numerous rumors, and alleged sightings, her fate was never determined.
- Where did the disappearance happen?
- 108 East 79th Street, Manhattan, New York City.
- What is the current status of the case?
- Status: unsolved.
Sources
- Disappearance of Dorothy Arnoldwikipedia · Wikipedia · 2026-07-07
- Contemporaneous coverage of Dorothy Arnold disappearancenews · nla.gov.au · 2026-07-07
- Dorothy Arnold Mystery Solved, Says Capt. Ayers, Announces in Lecturenews · The New York Times · 2026-07-07


