. >> i think that fred really tapped into glenn sanders vulnerabilities there, because, as glenn sandersfred, who seems like a cool guy, calling him brother, and i think that glenn sandler felt that he had finally met someone who he could relate to. >> it was a precarious balancing act. fred quickly set up a plan, telling sandler he needed to do surveillance on him. sandler provide details of their aero club life, even maps showing his other activities. >> something to show what her daily patterns might be. where she shops, where she goes to the gym. i had to get some groundwork done. >> what sandler did not know is that freddy had helpers. fellow detectives like jason montoto. >> we used our tag team coup to conduct whatever information we could and provide to the undercover officers such so that he could go back to mr. sandler and he would make it seem like, she goes here, last week she was here, kind of thing. but >> there was a dog or two involved but. it seemed like a dog traveled through a lot, so i mentioned that. >> what did you say? >> the dog always with her. that was enough fo