Littlejohn Services, LLC is a licensed and insured Private Investigation Agency, able to conduct polygraph services and comprehensive public service pre-employment investigations throughout the Pacific Northwest.

Polygraph services are available to police departments, treatment providers, private attorneys, public defenders and individuals.

Pre-employment services are available to police, fire, dispatch and other municipal and county agencies throughout Northwestern Washington.

Bob Littlejohn is a polygraph examiner and a licensed investigator. Bob retired after serving over 32 years with a large Northwest Law Enforcement Agency, with extensive experience as a Background Investigator and as Hiring Coordinator in charge of background investigations and hiring. In addition, Bob is a polygraph examiner having attended Western Oregon University School of Polygraph, graduating number one in his class. Since graduation he has administered polygraph examinations, on a regular basis, for police departments, treatment providers, private attorneys, public defenders, the Washington State Department of Corrections and private citizens. He has extensive training and practical background in employment law and is Reid trained in interview and interrogation techniques. In addition, he is a Nationally Certified Polygraph Examiner, and is trained and certified in both Basic and Advanced Post Conviction Sexual Offender Testing. He is a member of the American Polygraph Association, American Association of Police Polygraphists, and the Northwest Polygraph Examiners Association, where he is a past president. .

Julie Littlejohn is a Certified Paralegal, having graduated from the paralegal program at Edmond's Community College and is a licensed private investigator with extensive interviewing background. She is Reid trained in interview and interrogation techniques and has extensive training and experience in Public Safety Background Investigation. She also worked for the same Northwest Law Enforcement Agency and is familiar with records systems and confidentiality in both the public and private sector. Julie is a member of the Washington Association of Legal Investigators (WALI).