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!

Antone Charles Costa: The Cape Cod Killer

Early Life

Antone Charles Costa, also known as Tony Costa, was born on August 2, 1944, in Cambridge, Massachusetts. He showed signs of predatory violence from a young age. At 17, he committed his first violent offense by breaking into a house and attacking a teenage girl in November 1961.

Crimes and Victims

Costa's crimes spanned from 1968 to 1969, during which he brutally murdered and dismembered several women. His crimes gained international media attention due to their gruesome nature.

Victims

  • Susan Perry: Missing since September 1968. Her body was found cut into eight pieces in February 1969.
  • Patricia Walsh: Last seen in January 1969. Her mutilated body was found in a forest clearing in February 1969.
  • Mary Anne Wysocki: Last seen in January 1969. Parts of her body were found in February 1969, and the rest in a forest clearing.
  • Sydney Monzon: Her dismembered body was found beneath the remains of Walsh and Wysocki.
...Read More
Victims
See any mistakes? Let us know!
Confirmed Victims: (4)
  • Susan Perry Age: (17), Date of Death: 1968-09-04
  •     ...View 3 additional victims
    Links to Additional Sources (10)
    See any mistakes? Let us know!
    Killer's Details

    Antone Charles

    Costa

    August 2, 1944 Cambridge, Massachusetts, United States

    May 12, 1974 (aged 29) Walpole, Massachusetts, United States

    Suicide by hanging

    Male

    White

    Murder (x2)

    Life imprisonment

    4-8

    1968 - 1969

    Massachusetts

    1969

    07/03/2025