The range of investigative services includes, but is not limited to:

  • Criminal Investigations
  • Civil Investigations
  • Corporate Investigations
  • Domestic Investigations
  • Surveillance
  • Threat Assessments




Our Security Services include:

  • Uniformed/Plain Clothes Security Guards
  • Personal and V.I.P. Security Assessment/Protection
  • Loss Prevention
  • Alarm Response
  • K9 Services


Featured training programs:

  • ISN Investigative Interviewing System©
  • Private Investigator Course
  • Security Guard Course


Background Screening

Our background screening services include:

  • Criminal Record Checks
  • Fingerprinting
  • Screening Services


ISN movingISN Training Course ISN course

Current Job Openings

Full Time and Part Time Security Guards

ISN is looking for licensed, qualified Security Guards in the Durham Region. Candidates must possess a valid Ontario Security license, a vehicle or reliable method of transportation.
Candidates must be able to work rotational shifts (nights/days/afternoons), and be able to work a minimum of 24 hrs per week, weekdays and weekends.
Previous Security experience is an asset, along with excellent Customer Service skills, and a professional/presentable appearance. Openings available for Full-Time and Part-Time with potential for growth within the company.


  View our training
  development team,
  click here.  

  View Course Calendar  
  to find more courses.

  We customize training   
  courses for

  Training Inquiries?
  Call our Training Division
  at 416-799-9581 or
  email to This email address is being protected from spambots. You need JavaScript enabled to view it.


Ken Estabrooks Investigation

Saint John has hired Investigative Solutions Network to look into new sexual abuse allegations against a former police officer, Kenneth Estabrooks. 


If you have any information,
we would like to talk to you.

Call investigators Dave Perry
or Laura Bradbury at

506-608-3447(confidential Saint John number)

1-866-790-4764(confidential and toll free)

Investigative Solutions Network

Read News & Articles >>


Media Resource

Dave Perry Media Appearances

CTV News
Dave Perry
Dave Perry, former homicide investigator discusses Germanwings co-pilot Investigation with CTV News - March 27, 2015

Ron Wretham Media Appearances

CTV News

Former Toronto Police Platoon Commander Ron Wretham Co-CEO of Investigative Solutions Network shares his insights on the Boston bombing trial - March 4, 2015

Mike Harvey Media Appearances

CTV News

ISN president Mike Harvey discusses RCMP shooting suspect
- January 19, 2015

James Carmichael Media Appearances

CTV News

ISN VP Risk Management, James Carmichael on CTV News discusses massive search for suspect in Hostage-taking in Paris
- January 10, 2015


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