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Unsolved case · 1910

Disappearance of Dorothy Arnold

UNSOLVED
Updated
Updated Jul 7, 2026
(King1893NYC) pg766 KNICKERBOCKER TRUST CO., 234 FIFTH AVENUE, CORNER OF 27th STREET(King1893NYC) pg766 KNICKERBOCKER TRUST CO., 234 FIFTH AVENUE, CORNER OF 27th STREETCredit: This file is from the Mechanical Curator collection, a set of over 1 million images…Public domainSource

The short answer

Disappearance of Dorothy Arnold in brief

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.

Start hereDAUGHTER OF MAKEUP MILLIONAIRE DISAPPEARS – The Dorothy Arnold Case

Key facts

Year
1910
Place
108 East 79th Street, Manhattan, New York City
Status
UNSOLVEDUnsolved
Victim
Dorothy Arnold
Outcome
No conviction on file

The coverage index

Where to watch & listen

1 piece from 1 creator: ranked, with duplicates removed and short clips set aside.

Start here

DAUGHTER OF MAKEUP MILLIONAIRE DISAPPEARS – The Dorothy Arnold Case

Video · YouTube · 25 min · 2019

Brooke Makenna's 25-minute breakdown, the fullest single telling on file.

Watch on YouTube

Titles and descriptions are the creators’ own and may not reflect current legal status. The sourced facts are in the file below. Players load only when you press play. Suggest coverage we’re missing.

The case file

What happened

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.

14 dated entries · 1885–1928

Timeline

  1. Dorothy Harriet Camille Arnold is born in New York City.

  2. Arnold graduates from Bryn Mawr College.

  3. Arnold secretly spends a week at a hotel with George Griscom Jr. after telling her parents she was visiting a former classmate in Boston.

  4. Arnold's second short story submission to McClure's magazine is rejected.

  5. Arnold leaves her family home to shop for a dress, is seen by clerks and a friend, and is not confirmed seen again.

  6. The Arnold family sends a telegram to George Griscom Jr. in Italy asking about Dorothy's disappearance.

  7. The Arnold family files a missing persons report with the NYPD.

  8. Arnold's mother and brother confront Griscom in Italy; he denies knowledge of her whereabouts.

  9. Francis Arnold holds a press conference announcing his daughter's disappearance and offers a $1,000 reward.

  10. NYPD announces it believes Arnold is dead but has found no evidence of a crime and stops active investigation.

  11. Convicted felon Edward Glennoris claims he helped bury a woman he believed was Dorothy Arnold; police excavations find no remains.

  12. Captain John H. Ayers of the Bureau of Missing Persons claims Arnold's fate is known, then retracts the statement the next day.

  13. Francis Arnold, Dorothy's father, dies, having excluded her from his will believing she was dead.

  14. Mary Arnold, Dorothy's mother, dies, reportedly still hopeful her daughter was alive.

1 named in this file

People

Victims first. Every legal label is set from public records and court outcomes, not from the prose.

  • Dorothy Arnold

    VICTIM

    New York socialite and aspiring writer who disappeared on December 12, 1910; her fate was never determined.[3]

3 cited

Sources

Coverage is not a source: every fact in this file rests on the records below.

  • 1 Official / agency
  • 1 Press
  • 1 Encyclopedic
  1. Contemporaneous coverage of Dorothy Arnold disappearance

    Official / agencynla.gov.auAccessed Jul 7, 2026

  2. Disappearance of Dorothy Arnold

    EncyclopedicWikipediaAccessed Jul 7, 2026

Trust

Record history

First published
Jul 7, 2026
Corrections
None

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