Timely - Reliable - Thorough
Our Staff
John A. Markley, Investigator - has 32 years of investigative experience including South Beloit Police, South Beloit, IL-Sgt., Winnebago County Sheriffs Deputy, Rockford, IL, Beloit Police Department-Police Officer, Detective & SWAT Team Commander, Beloit, WI (Retired), Investigator for the Rock County District Attorney’s Office, WI. John has served as a private contractor in Amman, Jordan training Iraqi Police Officers.
Shawn M. Markley, Investigator - has 12 years of investigative and process service experience including Winnebago County Sheriffs Department, Rockford, IL and Markley Investigations, Inc.
Donald J. Tinder, Investigator - has 24 years of law enforcement experience with the Beloit Police Department including Captain and SWAT Team Commander. (retired) Over 20 years were in the Detective Bureau as a Detective, Sgt. or Captain, supervising. He was the Quality Coordinator for Bryden Motors for 7 years and the Executive Director of Rock Valley Community Programs for 2 years.
Bobby Pittman, Investigator - has worked for the Beloit Police Department as a Police Officer for 18 years (retired) and for Markley Investigation, Inc. for 3 years. He has served in Iraq and Afghanistan as a private contractor training Police Officers in those counties.
Douglas Anderson, Investigator - has 24 years investigative experience including 24 years on the Beloit Wisconsin Police Department. (Retired) Doug is an instructor for the police academy at Blackhawk Technical College. He is certified as an expert in use of force in state cases.
Douglas Olstead, Investigator - has 19 years investigative experience. He has worked as a Beloit Police Officer for the Beloit Police Department, Beloit Wisconsin for 19 years. (Retired)
Michael McDaniel, Investigator - has 34 years of experience in investigative procedures including Winnebago County Sheriff’s Police, Research and Investigative Laboratories, Inc., Rockford Park District Police, Per Mar Security Services and EPI Security Services.
Gary W. Ballard, Investigator has 20 years of law enforcement experience. He has been a Lieutenant and Acting Chief of Police for the Village of Roscoe Police Department, Illinois. (Retired)
Jason Dalton, Investigator - graduated with an Associate’s Degree in Criminal Justice. Prior to joining Markley Investigations, Inc. Jason was employed by Chrysler Corporation, Belvidere, IL.
Greg Ferguson, Investigator has 31 years of experience as a police officer and police administrator including the Captain of the Beloit Police Detective Bureau. Greg was a full time Criminal Justice Instructor for the Madison Area Technical College.
Chuck Flood, Investigator has 32 years of law enforcement experience with the US Army Military Police, the Evansville and Milwaukee Police Departments and the Rock County Sheriff’s Department. Over 18 years were in the County Detective Bureau as a detective, polygraph examiner, arson investigator and undercover officer with the Metro Drug Unit. He also was a team leader for the Rock County Dive & Recovery Team and a member of the SWAT Team.
Sandy Markley, Office Manager has worked for Markley Investigation, Inc. for 13 years and has 36 years of office experience.
Heidemarie Watson, Secretary has 23 years of office experience including working for a large attorney’s office, Michael Best & Friedrich, Madison, WI.
Erica Kirichkow, Secretary has experience with the US Army National Guard and five years of office experience including working for a large attorney’s office, Dudley DeBosier in Baton Rouge, LA.