206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
⚠️ Warning: Viewer Discretion Advised ⚠️ The following section contains detailed information about serial killers, their crimes, and case details. Some content may be disturbing or graphic, including descriptions of violence, criminal behavior, and sensitive subject matter.
Description
See any errors? Let us know!

Alfred Andrew Knapp: The Hamilton Strangler

Overview

Alfred Andrew Knapp, also known as "The Hamilton Strangler," was a 19th-century American serial killer responsible for the deaths of at least five women and girls between 1894 and 1902. Born in 1863 in Terre Haute, Indiana, Knapp was executed on August 19, 1904, for the murder of his third wife, Hannah Knapp.

Crimes

Knapp's crimes spanned several years and involved brutal assaults and murders. Below are the known victims of his heinous acts:
  • Emma Littleman - Murdered in a lumberyard in Cincinnati on June 21, 1894.
  • Mary Eckert - Murdered on Walnut Street in Cincinnati on August 1, 1894.
  • Jennie Connors Knapp - Alfred's second wife, murdered on Liberty Street in Cincinnati on August 17, 1894.
  • Ida Gebhard - A child, murdered in Indianapolis in July 1896.
  • Hannah Knapp - Alfred's third wife, murdered on December 21, 1902, in Cincinnati. Her body was disposed of in the Great Miami River.

Arrest and Confession

Knapp was arrested on February 25, 1903, on suspicion of murdering his wife, Hannah Knapp. During his interrogation, he confessed not only to her murder but also to the killings of four other women and a girl. His confessions shocked the authorities and the public, as he admitted to targeting innocent children and women. ...Read More
Victims
See any mistakes? Let us know!
Confirmed Victims: (5)
  • Hannah Knapp , Date of Death: December 21, 1903
  •     ...View 4 additional victims
    Links to Additional Sources (7)
    See any mistakes? Let us know!
    Killer's Details

    Alfred Andrew

    Knapp

    1863 Terre Haute, Indiana, United States

    August 19, 1904 (aged 40–41) Columbus, Ohio, United States

    Executed by electric chair

    Male

    White

    The Hamilton Strangler, The Ohio Strangler, The Indianapolis Wife Strangler

    Murder

    Death

    5+

    1894 - 1902

    Ohio, Indiana

    February 25, 1903

    Ohio State Penitentiary

    07/03/2025