10 Points to whom can best describe what really happened in the end of SAW IV?!

Question: I did not get the ending of the movie. I couldn't grasp it thoroughly. Please do explain.

---

---

Answers: I did not get the ending of the movie. I couldn't grasp it thoroughly. Please do explain.

---

---

Basically the film starts with the end. Saw III and IV is happening at the same time.
So in the beginning when the cop listens the tape (from Jigsaw's stomach) that happened after the whole movie

I hope you understand

---

---

I havent seen it, but this link should have it:
http://en.wikipedia.org/wiki/Saw_4
I apologize if it doesnt, but I havent read it because I havent seen the movie yet :)

---

---

---