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Case Description
Any updates on this case?
Marilyn Sue Koski, 35, was last seen in Portland, Oregon, on January 1, 1989. She disappeared after leaving two notes—one to her next of kin and one to her roommate—indicating the possibility of suicide. At the time of her disappearance, she was living on a houseboat on the Willamette River. Despite these notes, there has been no confirmed evidence or trace of Marilyn since that day.
In the years since, no significant leads have emerged, and her case remains unsolved. The details su ...Read More
Last Seen: Jan 01, 1989
In the years since, no significant leads have emerged, and her case remains unsolved. The details su ...Read More
Last Seen: Jan 01, 1989
Links to Additional Sources (5)
See any mistakes?Victim Details
Jan 16, 2012
Jul 17, 2023
Marilyn
Koski
70
35
62 inches
64 inches
130 lbs
140 lbs
White / Caucasian
Female
Jan 01, 1989
Portland
Oregon
Multnomah County
No
236
11218
Multnomah County Sheriff's Office
Portland
Oregon
Multnomah County
97214
Keith Krafve
Detective Sgt.
501 Southeast Hawthorne Boulevard, Suite 350, Oregon
5039884300
County
Law Enforcement
89.24
Multnomah County Sheriff's Office
Blond/Strawberry
Blue
Blue
11/25/2025
Area Last Seen:
Forum Posts (3)
I’ve been revisiting Marilyn Sue Koski’s case and something about her leaving those notes just d... ...Read More
05/27/2024
05/27/2024
Has anyone looked into the local community around where Marilyn was living at the time? I mean, livi... ...Read More
01/31/2024
01/31/2024
Has anyone else been following the Marilyn Sue Koski case from 1989? I was reading about her living ... ...Read More
06/27/2023
06/27/2023
