263 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

William Cassada Missing Person Case

Last seen in Seaside, California on Oct 04, 1989

Victim Details

Created

Nov 08, 2016

Case Added

Sep 23, 2022

Firstname

William

Lastname

Cassada

Current Age

Age At Disappearance

Height

70 inches

Weight

155 lbs

Ethnicity

White / Caucasian

Gender

Male

Last Seen

Oct 04, 1989

City

Seaside

State

California

County

Monterey County

Tribal Land

Agency ID

19033

Agency Name

Pacific Grove Police Department

Agency City

Pacific Grove

Agency State

California

Agency County

Monterey County

Agency Zip Code

93950

Agency Contact

Maxfield Murray

Contact Job Title

Detective

Agency Address

580 Pine Ave, California

Agency Phone

8316477900

Agency Jurisdiction

Local

Agency Type

Law Enforcement

Agency Website

https://www.cityofpacificgrove.org/public-safety/police

Agency Case #

22-0848

Agency Report Date

1989-10-04

Primary Agency

Pacific Grove Police Department

Hair Color

Red/Auburn

Left Eye Color

Blue

Right Eye Color

Blue

Last Updated

07/17/2026

Area Last Seen:

Case Description

Any updates on this case? Let us know!

William Barnett Cassada, aged 36, was last seen on October 4, 1989, in Pacific Grove, California. His disappearance was marked by troubling circumstances. Cassada had been struggling with severe depression, paranoia, and delusions, reportedly believing he was working for the CIA. He also required medication for his mental health, which he was not taking at the time, and was suffering from a mild case of pneumonia.

On the day he vanished, Cassada showed his mother a significant amount of ...

MEMBER ACCESS