CrimeSolver
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This is a strange case because there is virtually no data on it available publicly, and because it remains unsolved. To the former, one would think a quadruple murder warrants continued interest, and to the latter, one would think a crime this brazen in a fairly busy area quickly leads to suspects, or at least composite drawings and vehicle info.
This rinky-dink website is the only mention I could find of the crime: www.goldstarclub.com/news.html?ID=58
A couple of years ago I e-mailed the police dept. and encouraged it to approach AMW with this case; I didn't even get the courtesy of a form response. I also e-mailed AMW, asking it to profile this case, and received an answer that the show could not do a story on this; I don't know why.
I was vacationing in Siesta Key a couple of months ago, and drove north to the scene of the crime on Anna Maria Island. There is, of course, nothing much one can glean from the scene, but it's interesting for a crime buff anyway. Here are a couple of maps of the site:
This rinky-dink website is the only mention I could find of the crime: www.goldstarclub.com/news.html?ID=58
Friday, August 1st 1980
Kingfish Boat Ramp Murders click here for more
Dr. Juan Dumois, Eric Dumois age 13, Mark Dumois age 9 and Robert Matzke The Kingfish Ramp Murders. A person approached the Dumois vehicle, pretending to have an injury and asked for a ride. The subject got in the car with the Dumois family and Rober Matzke, then shot and killed all four.
Friday, August 01, 1980
Dr. Juan Dumois, Eric Dumois age 13, Mark Dumois age 9 and Robert Matzke
On the date of August 1, 1980, five people were shot, four of them fatally in the City of Holmes Beach. This case remains under investigation by the Holmes Beach Police Department.
Dr. Juan Dumois, 47, his sons Eric, 13 and Mark, 9, and local resident Robert Matzke, 60, were murdered by an unknown assailant. Dumois brother in law, Raymond Barrows, 54, was also shot but survived. Barrows died of natural causes in 1982.
On August 1, 1980 at 5:00p.m, Dumois, his sons, and Barrows returned from a fishing trip and loaded their boat at the Kingfish Boat Ramp. After pulling away from the ramp, they were approached by a white male on a bicycle. The subject stated that he had injured his ankle and asked for a ride. He then loaded his bicycle into the boat and got in the back seat of Dumois station wagon with the children. Dumois pulled out and proceeded westbound on Manatee Avenue from the ramp. The subject immediately opened fire in the vehicle striking all of the victims in the back of the head with a .22 caliber weapon. The vehicle then jackknifed on the north shoulder of Manatee Avenue just west of the boat ramp. The subject then got out of the vehicle and rode westbound on Manatee Avenue on his bicycle.
Matzke, working in his yard at a nearby condominium, observed what had taken place and pursued the subject to the parking lot of a nearby grocery store. Matzke and the subject exchanged words, and he was shot in the head by the subject.
Witnesses then observed the subject load his bicycle in a tan colored vehicle at the grocery store and leave eastbound on Manatee Avenue.
This case is still under investigation by the Holmes Beach Police Department, and if anyone has any information as to the identity of the suspect they are asked to call CrimeStoppers at toll free 1-866-634-TIPS (8477)or Det. Sgt. Nancy Rogers or Chief Jay Romine of the Holmes Beach Police Department at 941-708-5804.
The Gold Star Club is offering a reward of $5000 for information that would lead to the arrest and conviction of the person responsible for this crime.
Reward posted July 19, 2000
A couple of years ago I e-mailed the police dept. and encouraged it to approach AMW with this case; I didn't even get the courtesy of a form response. I also e-mailed AMW, asking it to profile this case, and received an answer that the show could not do a story on this; I don't know why.
I was vacationing in Siesta Key a couple of months ago, and drove north to the scene of the crime on Anna Maria Island. There is, of course, nothing much one can glean from the scene, but it's interesting for a crime buff anyway. Here are a couple of maps of the site:
An overview of the area:
A closer satellite view of the area surrounding Kingfish Boat Ramp (it's not a very good image, but it's the best I could find gratis (it seems one can no longer save Mapquest of GoogleMaps images)):
The yellow line represents the approximate (best guess) path of the Dumois's car from the ramp to where it veered off road. The red line represents the approximate path of the suspect from the accident site to the grocery store, where he shot the fourth victim. The blue line represents the suspect's escape route from the crime scene.
It would be nice if someone more in-the-know could give us further details. The paltry info I found on the internet is the extent of my knowledge. An interesting final note is that the only other "Dr. Juan Dumois" who comes up after a Google search is someone who lives not far from where this took place. Maybe he's a relative.