56case filesUpdated Jul 14, 2026
Casepin holds 56 case files from the 1920s. By legal status, 26 marked unsolved, 3 marked cold, 25 marked solved and 2 marked overturned.
Credit: Wikipedia/Wikimedia Commons (Hall–Mills murder case), c.1920Public domainSourceUNSOLVEDListenFranklin Township, Somerset County, New Jersey · 1920s
Episcopal priest Edward Wheeler Hall and choir member Eleanor Mills, with whom he was having an affair, were found shot to death in a New Jersey field in September 1922. Hall's wife and her two brothers were tried in 1926 and acquitted; the case remains legally unsolved.
Credit: Unknown authorPublic domainSourceSOLVEDListenBraintree, Massachusetts, United States · 1927
Italian immigrant anarchists Nicola Sacco and Bartolomeo Vanzetti were convicted in 1921 of murdering a guard and a paymaster during a 1920 Massachusetts payroll robbery; despite worldwide protest over alleged bias and disputed evidence, both were executed in 1927, and in 1977 the state proclaimed their trial unfair.
Credit: Archives New Zealand from New ZealandCC BY-SA 2.0SourceUNSOLVEDListenTasman Sea, between Australia and New Zealand · 1928
Lieutenant John Moncrieff and Captain George Hood disappeared on 10 January 1928 while attempting the first trans-Tasman flight from Australia to New Zealand in their aircraft Aotearoa. Radio signals ceased after about 12 hours and, despite extensive searches over the following decades, no trace of the men or their plane has ever been found.
Ruby, Arizona · 1920
Between 1920 and 1922, six people were killed in a series of robberies and manhunts centered on the Ruby Mercantile store near the border town of Ruby, Arizona, including two store owners, the wife of a second store owner, and two lawmen killed during a prisoner escape.
Credit: Unknown authorPublic domainSourceUNSOLVEDListenTigard, Oregon, United States · 1926
Marvin Clark, an elderly Tigard, Oregon man, vanished on October 30, 1926 while traveling to meet his daughter in Portland, and has never been definitively found, making his case the oldest active missing person case in the United States.
UNSOLVEDListenGrand Canyon, Colorado River, Arizona · 1926
Newlyweds Glen and Bessie Hyde vanished in November 1928 while attempting to run the Colorado River's rapids through the Grand Canyon; their scow was later found intact and adrift, but no trace of the couple was ever recovered.
SOLVEDListenMorlaix, Brittany, France · 1923
Breton wood merchant and politician Pierre Quéméneur vanished on a 1923 business trip from Brittany to Paris and was never found. His travelling companion, Guillaume Seznec, was convicted of his murder in 1924 despite the absence of a body, in a case that remains disputed a century later.
Credit: Daily Mirror originallyPublic domainSourceSOLVEDListen86 Rochester Row, City of Westminster, London · 1927
In May 1927, the dismembered body of Minnie Alice Bonati was found in a trunk left at Charing Cross railway station's left-luggage office; estate agent John Robinson was convicted of her murder and hanged.
Credit: Unknown photographerPublic domainSourceSOLVEDListenIvankovo, Sudislavsky District, Kostroma Governorate, RSFSR, Soviet Union · 1925
On 26 July 1925, Grigory Grachov set fire to houses in the village of Ivankovo, Soviet Union, then ambushed and shot villagers and firefighters who responded, killing 11 and wounding 8 before being captured.
OVERTURNEDListenInnsbruck, Tyrol, Austria · 1928
In 1928, 22-year-old Philippe Halsman was accused of killing his father, Morduch Halsman, a Latvian Jewish dentist, during a hike in Austria's Zillertal valley. His first conviction, widely criticized as a product of regional antisemitism, was overturned by Austria's Supreme Court; a second trial convicted him of manslaughter, and he was pardoned by the Austrian president in 1930.
1922 is the year with the most files in the decade, 13 of them. 54 files carry an exact date; the rest are dated to the decade by the record.
They are spread across 14 countries; the most are in United States (39), Argentina (2) and New Zealand (2). By type, the largest groups are murder and homicide cases (38), hate crime cases (9) and disappearance cases (6).
3 files of the 56 have coverage attached: 3 videos, podcasts and documentaries from 2 creators. Georgia Marie and Brooke Makenna have covered the most of them.
Every file is written from cited sources and pinned where it happened, and every person named carries the legal status the record gives them. If you hold information about an unsolved case, contact the investigating agency named in its file rather than posting it publicly. Families and anyone involved can request a correction from any file.
Kahoe House — Credit: unknown, no credit in original sourcePublic domainSource
Eleanor Reinhardt Mills, Edward Wheeler Hall — Credit: Wikipedia/Wikimedia Commons (Hall–Mills murder case), c.1920Public domainSource
Hinterkaifeck-Hof (cropped) — Credit: Andreas Biegleder. According to a letter from the City Archive of Munich from October 2…Public domainSource
Mario Buda — Credit: Unknown authorPublic domainSource
Nortcott house — Credit: Unknown authorPublic domainSource
Bundesarchiv Bild 102-00652, Richard Loeb und Nathan Leopold — Credit: Unknown authorCC BY-SA 3.0 DESource
Bryan ranch bunkhouses — Credit: Unknown authorPublic domainSource
Crowd at Hickman trial — Credit: Unknown authorPublic domainSource
Search map for missing aviators George Hood & John Moncrieff — Credit: Archives New Zealand from New ZealandCC BY-SA 2.0Source
Waikino school (cropped) — Credit: Unknown, likely New Zealand policePublic domainSource
Marvin A. Clark — Credit: Unknown authorPublic domainSource
File:Christine Collins.png — Credit: Unknown author Unknown authorPublic domainSource
Charing Cross Trunk Murder — Credit: Daily Mirror originallyPublic domainSource
Trial of G.T. Grachev — Credit: Unknown photographerPublic domainSource
Melbourne map 1855 — Credit: Victoria. Surveyor-General.Public domainSource
Former Scott County Courthouse, Waldron, Arkansas — Credit: BrandonrushCC0SourceThese files are published and cited but are kept out of search listings for now, either because they fall outside Casepin’s true-crime scope or because they are still being deepened.
56. By status: 26 unsolved, 3 cold, 25 solved and 2 overturned. The count covers published files only and changes as new files clear review.
Killing of Edward Hall and Eleanor Mills, with 1 video, podcast or documentary linked from its file. Open the file
Georgia Marie (1 case) and Brooke Makenna (1 case).
United States (39), Argentina (2) and New Zealand (2).
It rebuilds hourly from the published files; the newest file change here is dated Jul 14, 2026. A status changes only when the record behind it does.
