Surveillance and counter surveillance

Beryl 614, a former French Spy who worked for DGSE for 15 years, reveals some of the basic principles of surveillance and counter surveillance.
Internet site: talkswithaspy.com
Many thanks to Tim Murray and Matthew Horm for their participation during filming!
Copyrights :
1. Photos:
© Creativemarc-stock.adobe.com
© babaroga-stock.adobe.com
© eyetronic-stock.adobe.com
2. Musique:
Macedonian Mountain Dance d'Alan Hovhaness, interprété par Jan Steele (©JanSteele2017).