The ISN Investigative Interviewing System, course information and registration
Investigative InterviewingThe ISN Investigative Interviewing courses come in a variety of modules from a 1 day to a 3 day advanced course. ISN will assist you with selecting the right course for you or we will customize to suit the specific needs of our clients.
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Our Team
The ISN team is led by Dave Perry who has 27 years of police experience retiring as one of the most recognizable and successful investigators in the Toronto Police Service. In his distinguished career he has worked on some of the largest and most sensitive investigations in the country. He has been called on to speak and make presentations in a variety of forums including international conferences.Learn More >>
Testimonials
Dave Perry has supported the work of Child Find Ontario for close to 20 years. He has assisted in the training of our volunteers and staff and most importantly, he has been an advocate and a voice for missing children and their families.Learn More >>
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Investigative Solutions Network Inc. Team
The ISN team is led by Dave Perry who has 27 years of police experience retiring as one of the most recognizable and successful investigators in the Toronto Police Service. In his distinguished career he has worked on some of the largest and most sensitive investigations in the country. He has been called on to speak and make presentations in a variety of forums including international conferences. Dave has distinguished himself as one of the premier investigators in the country, a media personality, a college professor and businessman. Dave Perry has now brought his experience and skill together to form Investigative Solutions Network Inc. (ISN), where he works with handpicked associates to deliver excellence, integrity, and quality service to their clients. Below is an overview of the background of the executive team members who will take care of your investigative, training, and consulting needs.
- Dave Perry, CEO >>
- Ron Wretham, President >>
- Chris Wilson B.A.S., B. Ed., Vice President, Training & Education >>
No matter what your problem or need ISN will find a solution that will work for you using
the best people, the best methods,
achieving the best results.




