Unsolved 1990 Clarkston homicide case reopened

March 20, 2018 | Brainwave Science


The Washington State Patrol Cold Case Unit and the Clarkston Police Department are working together to investigate a 1990 unsolved homicide.

Toni Ann Tedder, 18, died from a knife wound on July 28, 1990, while sleeping on the couch at her home on the 500 block of 7th Street. Authorities declared that other people were present at the time in her home.

“It’s a difficult case,” Clarkston Detective Richard Muszynski told the Lewiston Tribune in 2014. “All it would take is for one person to come forward and this case could be ripped wide open.”

At the time of the crime, the police found at the scene a wooden handled fishing fillet knife with a 6-inch blade. This is believed to be the crime weapon. A relative told police she saw the assailant jump out of a window and helped a police officer render a sketch of the unknown man.

A lot of interviews and investigations have been conducted over the years. Nevertheless, no matter the leads, the authorities haven’t arrested any suspect.


In a more and more violent world, law enforcement faces a lot of daily challenges in protecting citizens. In addition to homicide, rape, assault, and theft, law enforcement professionals are called to combat challenging threats that transcend national borders. Among these threats, terrorism, corruption, conspiracies, human and drug trafficking, and cybercrime strive.

Law enforcement’s responsibilities include detecting, deterring, rehabilitating and punishing those who commit violent crimes. But in today’s world, criminals find new ways of carrying out their acts of homicide. More than often, law enforcement can’t keep up. The security means at their disposal are limited in terms of costs and efficiency. In addition, they’re time-consuming.

Law enforcement faces difficulties in finding and securing evidence to verify a victim, witness, or suspect’s testimony. A polygraph test or a DNA test are limited in results. Furthermore, they can’t identify a criminal; they can only detect if he’s lying or place him through his DNA at the scene of the crime.

In the homicide case of the 18-year-old girl murdered in 1990, the existing investigative methods haven’t delivered any results. This is just one case among a million others where there isn’t sufficient evidence for new leads or for resolving the case.

With these in mind, a new security approach is mandatory. Where classical means fail, innovation can prevail and support law enforcement in its mission.




iCognative developed only by Brainwave Science is a state-of-the-art modern security solution. Its goal is to support law enforcement personnel with different levels of security challenges in their efforts to keep citizens and national borders safe. Its mission is to relentlessly deliver truth and justice at a global level.

iCognative utilizes advancements made in the field of neuroscience to enable a highly accurate identification of a person by distinguishing what a suspect, witness, or victim truly knows. Furthermore, the technology behind it is easy to use by law enforcement and provides valuable intelligence.

In the case of the 1990 homicide, this technology can provide useful intelligence, even 28 years later. This can also provide a right hint to solve this homicide. Each of the persons present in the house at the time of the crime can be investigated through it. The iCognative can be used to verify suspects, witnesses any other person even slightly related to the case. This is a good example where the number of pieces of evidence is limited to solve the crime.  Another evidence as the specific time of the date is also something that can be inputted in the test.Technology can take any significant items may not be connected to the crime in the near vicinity of the murder along with other significant items such as fishing fillet knife with a 6-inch blade as inputs to test the suspects. This is a unique way of testing suspects using iCognative technology, that is not possible with any other forensic techniques.  Based on how the brain responds to the mentioned stimuli, the system will detect if the information is significantly present in any suspects brain or not. With this aid, Toni Ann Tedder can get justice in this homicide.

iCognative sets the benchmark for innovation and performance, as it is a highly advanced, non-intrusive, and affordable security solution, posing great value for law enforcement.