I saw this movie when it came out on television in 1973. I was 13 years old at the time. I would rate this movie as a 10. The reason being, it scared the hell out of me when I saw it. It came at a very influential time for me. I knew nothing about drugs, I knew no one who had taken drugs and I had never experimented with drugs at that time.
I was later exposed to drugs, they were very prevalent in the seventies. They were everywhere. I had tried marijuana, and a couple other drugs, but never acquired them for myself and never made it my lifestyle. Because of this movie, I was afraid of where it would take me, and that I wouldn't be strong enough to come back from it.
The characters were strong enough, the movie was good enough, the story was told well enough. well enough in fact to haunt my dreams every time I stepped over the drug line and I think that's why it was made, and it did the job it was supposed to do. I'm sure I'm not the only one.