Over 25 Years of Experience
Rose Winquist is the founder of Winquist Investigations, and has been a licensed private investigator for over 25 years. Her experience includes investigations of criminal misconduct, securities and insurance fraud, sexual and other harassment, elder abuse and financial exploitation.
A Seattle native, she received her investigative training from criminal law enforcement staff at the U.S. Department of Justice and the King County Sheriff's Department. Rose trained with seasoned FBI, ATF and Homicide investigators who worked on the Ted Bundy and Green River Serial Killer – Gary Ridgeway – cases. Rose is considered one of the best investigators in the State of Washington. She has worked on numerous criminal defense and civil cases that have led to criminal convictions.
She has provided training for other investigators at the Washington State Crime Prevention Conference. Rose also volunteers her time and expertise to community organizations, including Legal Voice – which advocates for social justice and women's issues – and the Seattle Children's Hospital. She has appeared on panels to educate attorneys, investigators and human resource professionals about elder abuse issues.
High Profile Cases
Rose and her team have worked on well-known cases including the Sudafed tampering case, an E-coli poisoning case and complex securities fraud cases. They have also provided investigative services on the unsolved homicide of Tanya Frazier, the missing person case of Mark Stover, and support for The Friends of Amanda Knox.
Robert was with the King County Sheriff's department for 20 years. Upon his retirement as a homicide detective from the sheriff's department, he joined the Rose Winquist team in 1992 as a licensed private investigator and certified trainer.
Military and College
Raised in Seattle, Robert attended Highline High School and joined the Marine Corps upon graduation. During his 4 years of military service, he served 20 months in Vietnam in both infantry and a force reconnaissance unit. Upon his honorable discharge, he attended the Seattle University, receiving a Bachelor of Arts Degree in Police Science and Administration.
In addition to his professional duties with the King County Sheriff's Department, Robert also volunteered with the search and recovery group of King County Sheriff's Divers who assisted in search and recovery of individuals and evidence. He was the training officer for this group for 8 years. Robert provided volunteer counseling and advisory support to deputies involved in shootings and other traumatic incidents. He has also volunteered as a driver, assisting in the transport of disabled and elderly veterans to the VA hospital on behalf of the Disabled Veterans of America.
A field investigator with 20 years of experience, Matt specializes in surveillance and covert investigations. Matt has been trained by ex Federal and local law enforcement personnel. Matt has extensive knowledge and training with camera and video equipment and has conducted many investigations including insurance fraud and claims investigations, missing child cases and domestic cases.
A licensed investigator since 2001, Adam has extensive experience in Background Investigations, Skip Traces, Asset Investigations, and Insurance Fraud cases. Adam has investigated major fraud cases around the country and has successfully brought cases to prosecution with local and federal prosecutors. Adam helps oversee day-to-day training, supervision, office and personnel management of our field investigators.