World Renowned Detective

“The fight for justice against corruption is never easy. It never has been and never will be. It exacts a toll on our self, our families, our friends, and especially our children. In the end, I believe, as in my case, the price we pay is well worth holding on to our dignity.”

Frank Serpico




Specializing in Cold Cases, Missing Persons and Unsolved Homicides

"You will never do anything in this world without courage. It is the greatest quality of the mind next to honor." 


Kenneth L. Mains

  • Criminal Profiling
  • Advance Crime Scene Techniques
  • Collecting and Developing Latent Fingerprints
  • Advanced Homicide Courses
  • Equivocal Death Investigations
  • Multiple Death Scene Training
  • Blood Spatter Recognition
  • Tracing Hidden Assets
  • Criminal Law
  • Numerous Drug Lectures and Courses
  • (Complete list and certificates available upon request)


Mains Investigative Services, LLC

CEO/Private Investigator

  • We offer investigative consultation to family, friends and other concerned parties who are trying to find closure and resolution to their cold case. We specialize in cold cases to include missing persons, high profile cases, unsolved homicides and equivocal death. We are a licensed, reputable, full-service private investigation and consulting firm that goes above and beyond for our clients. Our mission is to focus on quality investigations that deliver quality results. We give our clients confidentiality and reliability by using our experienced and integrity driven investigators. Often times police won't divulge their findings...we can. Sometimes police get it wrong...we don't. Sometimes you can't find anyone to help...we will. View here.

History Channel

Reality TV Personality/Investigator and Consulting Producer

  • Investigated the Zodiac Murders in a five episode true crime Docu-Television series with Producers Karga Seven. View here.

The American Investigative Society of Cold Cases

  • The American Investigative Society of Cold Cases is a non-profit, volunteer based organization of professional investigators whose sole mission is to assist in solving cold cases. Our Mission is to actively assist law enforcement, criminal justice and legal professionals in the development of cold case investigations by offering professional, interdisciplinary cold case review, educational opportunities, published peer-reviewed research, broad-based societal outreach programming, and by creating supportive resources for families of victims in the pursuit of truth and justice. View here.                                                                                                                                                                                           

Cyril H. Wecht Institute of Forensic Science and Law at Duquesne University

Advisory Board Member

  • Official Board Member since 2014                                                                                                                                                      

Lock Haven University Criminal Justice Advisory Committee

Committee Member

  • Official Committee Member since 2016

Parents of Murdered Children

Second Opinion Provider

  • Help Parents find closure who have lost a child to homicide or undetermined death.

Narcotics Enforcement Unit - Lycoming County


  • Enforce illegal narcotic activities for Lycoming County Pennsylvania under the direction of the District Attorney of Lycoming County.

District Attorney's Office - Lycoming County
County Detective

  • Created, maintained and led the Lycoming County’s first and only Cold Case Unit as the sole investigator. In addition to cold case investigations, investigated various other crimes from homicide to financial crime. Assisted the District Attorney and Assistant District Attorney’s in preparing strategies for upcoming criminal trials. Assisted on numerous and various trials to include homicides, narcotics, assaults, armed robberies, burglaries, forgery, DUI and bank robberies.

Federal Bureau of Investigations (FBI)
Task Force Officer

  • Duties as an undercover agent included investigations into illegal narcotics, counterfeit currency, political corruption, and organized crime.                                                                                                                                      

Lycoming County Drug Task Force
Undercover Narcotics Officer

  • Performed duties as an undercover narcotics officer on hundreds of narcotic related investigations. Qualified as an expert in Lycoming County, Pa on drug investigations.

Williamsport Bureau of Police
Police Officer

  • Worked as a patrol officer responding to various incidents including assaults, domestic violence, robberies, burglaries, criminal mischief and other assorted crimes.

United States Marine Corps
II Marine Expeditionary Force Special Operations Training Group (SOTG)

  • Provided support and intelligence to various Special Operations Units within the Special Operations Training Group.