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Juan Dumois

Case from Holmes-beach, FL dated Aug 01, 1980

Victim Details

Name

Dr. Juan Dumois

Gender

Male

Race

White / Caucasian

City

Holmes-beach

State

FL

Date Of Death

1980-08-01

Age At Death

46

First Name

Juan

Last Name

Dumois

Last Updated

06/29/2026

Case Description

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On August 1, 1980, Dr. Juan Dumois, a 46-year-old physician from Tampa, Florida, was tragically killed in a quadruple murder at the Kingfish Boat Ramp in Holmes Beach, Florida. Dr. Dumois, along with his two sons, Eric (13) and Mark (9), and a local resident, Robert Matzke (60), were fatally shot in a shocking and brutal attack that remains unsolved to this day.

The incident occurred as Dr. Dumois and his family were returning from a fishing trip. They had just loaded their boat onto a tr ...

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Links to Additional Sources (4)

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Anna Maria Islander: Looking back: Killing spree at the Kingfish Boat Ramp - Anna Maria Islander

Anna Maria Islander: Holmes Beach cold case continues to command attention - Anna Maria Islander

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Forum Posts (2)

Has anyone else looked into the route the assailant might have used to escape the Kingfish Boat Ramp... ...Read More
01/07/2025

I recently stumbled across the 1980 Kingfish Boat Ramp murders, and something that really struck me ... ...Read More
05/16/2024

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Other Cases from Holmes-beach, Florida

Eric Dumois

Death: Aug 01, 1980
On August 1, 1980, a tragic event unfolded in Holmes Beach, Florida, resulting in the death of Eric c ...Read More

Mark Dumois

Death: Aug 01, 1980
On August 1, 1980, a tragic incident occurred in Holmes Beach, Florida, resulting in the death of Ma M ...Read More

Robert Matzke

Death: Aug 01, 1980
On August 1, 1980, Robert Matzke, a 60-year-old white male and retired Air Force colonel, was tragic i ...Read More