Diane Marie OConnell murdered or death by force in Point-reyes-station, California.

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Case Description

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Diane Marie O'Connell, a 22-year-old Cornell University graduate, tragically lost her life on November 28, 1980, at Point Reyes National Seashore in Marin County, California. Diane was one of the victims of the notorious Trailside Killer, David Carpenter. On that fateful day, Diane, along with another hiker, Shauna May, was found raped, shot, and strangled to death on Mount Wittenberg. The brutal nature of the crime sent shockwaves through the community and led to an intense investigation to bri ...Read More

Links to Additional Sources (2)

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Criminal Minds Wiki: David Carpenter

David Carpenter - Wikipedia

Victim Details

name

Diane Marie OConnell

gender

Female

race

White / Caucasian

city

Point-reyes-station

state

CA

Date of Death

1980-11-28

Age at Death

22

First Name

Diane

Last Name

Marie OConnell

Last Updated

11/23/2025

Forum Posts (2)

I came across something quite chilling in the case of Diane Marie O'Connell and the Trailside Killer... ...Read More
04/19/2024

I've been following the Trailside Killer case and keep thinking about the communities affected, espe... ...Read More
07/22/2023

Other Cases from Point-reyes-station, California

Shauna May

Death: Nov 28, 1980
Shauna May, a 25-year-old woman from Point Reyes Station, California, tragically lost her life on No N ...Read More

Cynthia Moreland

Death: Oct 11, 1980
Cynthia Moreland, an 18-year-old from Cotati, California, was tragically murdered on October 11, 198 9 ...Read More