king county prosecuting attorneys kristin richardson and carla carlstrom. well on a polygraph test. so they asked if he would take another test. he called a lawyer. the lawyer said you need to stop talking to the police right now, and so he did. it must have been a big red flag for police. yes, i think it was. i think whenever someone flunks a polygraph test, police get very concerned and suspicious and often want to go at that person harder and find out why. andrea canning: greg may have lawyered up, but detectives used those polygraph results to turn up the pressure. they told your sister you failed-- mm-hmm. andrea canning: --a polygraph test? yes. why? i guess they just wanted to try to turn her against me. andrea canning: lots of people in town were turning in that direction. in those first dark weeks after sandi went missing, her dear friend vicky fulkerson started to think greg was somehow involved. the police came to me and said certain things that would lead you to think that maybe he did it. what did they tell you that made you start to suspect gr