Saw Questions

Rating: Null/10 (30 October 2004)

Guys I'm new to the board so be gentle with me :) I thought the movie was really good but I am very easily scared. I jumped out of my seat the entire show! They were several points that I got stuck on and even lost a little sleep about.
1)At the beginning when Adam is trying to reach the tape, the Doc suggests that he use his shirt - however when the Doc is trying to reach the phone, instead of using his long-sleeved shirt, he uses it as a tourniquet?
2)When the Docs wife is on the phone and says "Don't believe Adam", she was only there with Zep. How did Zep know the detecive had paid Adam to follow him around?
3)Did anyone see the timer on the girls helmet?? Did that look like 60 seconds? Seems like it would take a lot longer to do what she did.
4) Finally - this ones really killing me. Did the Doc die?