Credit: Unknown authorPublic domainSourceUNSOLVEDListenLondon, England (multiple sites along the River Thames) · 1884
Between 1887 and 1889, the dismembered remains of at least four women were recovered from the River Thames and nearby sites in London; only one victim was identified, and none of the murders were ever solved.
Credit: The National Archives UKNo known restrictionsSourceSOLVEDListenWest coast of Aceh, Sumatra (near Tenom) · 1883
In November 1883 the British cargo ship Nisero ran aground off the west coast of Aceh, Sumatra; its 28 crew were taken captive by the Raja of Tenom and held for ten months, with seven dying of cholera or malnutrition, before a ransom secured their release in September 1884.
Credit: SaskgCC BY-SA 4.0SourceSOLVEDListenMass grave site near Fort Battleford, Town of Battleford · 1885
On November 27, 1885, eight Indigenous men were hanged at Battleford after being convicted of murders committed during the Frog Lake Massacre and the Looting of Battleford, events tied to the North-West Rebellion.
UNSOLVEDListenMayerling hunting lodge, Vienna Woods · 1889
Crown Prince Rudolf of Austria-Hungary, 30, and his 17-year-old mistress, Baroness Mary Vetsera, were found dead on 30 January 1889 at the imperial hunting lodge in Mayerling, in what Austrian authorities announced as a murder-suicide pact -- an account historians and later forensic examinations never conclusively confirmed.
SOLVEDListenYngsjö, Skåne, Sweden · 1889
Hanna Johansdotter, a young farmer's wife, was strangled at her family's farmhouse in Yngsjö, Sweden, in 1889, and her husband and mother-in-law were convicted of the murder.
Victoria Embankment, Whitehall, Westminster, London · 1888
In 1888, the dismembered remains of an unidentified woman were found at three sites in central London, including the construction site of New Scotland Yard; the case remains unsolved.
Credit: Unknown author Unknown authorPublic domainSourceUNSOLVEDListenJack Harris Vaudeville Saloon and Theater, San Antonio, Texas · 1884
On March 11, 1884, former lawmen Ben Thompson and King Fisher were shot dead in an ambush at the Jack Harris Vaudeville Saloon and Theater in San Antonio, Texas, an attack tied to lingering resentment over Thompson's 1882 killing of theater owner Jack Harris.
1889 is the year with the most files in the decade, 4 of them.
They are spread across 7 countries; the most are in United States (9), United Kingdom (4) and Canada (2). By type, the largest groups are murder and homicide cases (16), kidnapping and abduction cases (2) and serial murder cases (1).
1 file of the 19 has coverage attached: 3 videos, podcasts and documentaries from 2 creators. Kendall Rae and Bailey Sarian 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.
JacktheRipperWhitechapelcirca1890 — Credit: Unknown. Taken around 1890.Public domainSource
Whitehall murder school illustration — Credit: Unknown authorPublic domainSource
CO 1069-485-16 (7887880108) — Credit: The National Archives UKNo known restrictionsSource
Sketch of Woolfolk Home — Credit: Unknown authorPublic domainSource
The Tombstone of the Battleford Eight — Credit: SaskgCC BY-SA 4.0Source
File:Jack Harris Vaudeville Theatre.jpg — Credit: Unknown author Unknown authorPublic domainSourceThese 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.
19. By status: 9 unsolved, 1 cold and 9 solved. The count covers published files only and changes as new files clear review.
Kendall Rae (1 case) and Bailey Sarian (1 case).
United States (9), United Kingdom (4) and Canada (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.
