We went to cinema to watch this movie. With the large screen, the impression was at least 10 times stronger. 
After watching SAW I and SAW II, SAW IV looked less repellent than before. Totof and I would like to give it a try. Navaline suggested to watch it on a Friday night. We had five people. Laurent (went back from Brazil), Stephen, Navaline, and us. Before SAW IV, we went to Dynasty for dinner. None of us had ever been there for dinner. We only had its dim sum.
I should have posted this sooner. But, I just could not do it. Every time I tried to recall SAW IV, I got myself scared. The beginning part was an autopsy. The autopsy for John, the Jigsaw. I did not watch SAW III before watching IV. So, this fact was new to me. The autopsy was horribly detailed. When staff tried to cut John's scull, I was afraid John would wake up and kill these two staff (then SAW IV would become a ghost movie). This revival apparently did not occur. Instead, the staff found a tape in John's stomach. The story began.
According to the tape, we knew someone else was doing the work that the Jigsaw used to do. The question was that who this new guy was? Two detectives were trying hard to unveil the fact. In one discovery, they found their colleague, Kelly, was executed brutally. It was absolutely a Jigsaw's work. Then we saw another two FBI agents arrived. During the conversation, someone discovered a vital fact - this hidden person must be tall enough to pull Kelly up to be hanged on the device.
In this discovery, we also learned detective Rigg's personality. Rigg was tending to do things impulsively.
The movie showed two men. Both were chained together. The left man was a disability because his eyes were sewed. The right man was a disability because his mouth was sewed. So, they could not communicate with each other (or could they?) These two men were in an extremely angry and desperate condition. The man who could not see asked questions to the man who could not talk. By no means the right man could say anything to the left man. The misunderstanding made the situation worse. Accidentally the right man found the key to his chain was on the back of the left man's neck. He wanted to get it to save himself. See, the greedy and hope made this weak looking man different. This man decided to get the key by force. He got advantage which was that he could see. His plan did not go well so he got violent resistance. The right man succeeded after 5 min. The price for his success was the death of the left man.
The movie showed two men. Both were chained together. The left man was a disability because his eyes were sewed. The right man was a disability because his mouth was sewed. So, they could not communicate with each other (or could they?) These two men were in an extremely angry and desperate condition. The man who could not see asked questions to the man who could not talk. By no means the right man could say anything to the left man. The misunderstanding made the situation worse. Accidentally the right man found the key to his chain was on the back of the left man's neck. He wanted to get it to save himself. See, the greedy and hope made this weak looking man different. This man decided to get the key by force. He got advantage which was that he could see. His plan did not go well so he got violent resistance. The right man succeeded after 5 min. The price for his success was the death of the left man.
Then, one detective went missing. Through the conversation between a FBI and Rigg, we got a hint - all missing or dead detectives were all Rigg's colleagues. Rigg could not just sit and watch his colleagues missing. He wanted to do something. He became obsessed by this mysterious Jigsaw successor.
Rigg went home. His wife wanted to leave him for some time. Rig went sleep. During the midnight, he was awaken by some noise. He became alert. The scene was constructed quite breathtaking. Rigg was ambushed. When he woke up, he saw a red paint on a door saying "you see what I see". He walked to the library and saw a girl was trapped. Her hair was sucked by a device. If no one stopped the device, the girl would be killed. I chose not to see this scene. Then, after some mess, Rigg saw a box with two keys. One key to save and one key to kill. Rigg took both.
Audience followed Rigg and his flashback. He recalled some moments with the missing detective. It was a child abuse case. Rigg arrived at a center and entered a room. Two people were trapped together. These two were the parents of the abuse child we saw in Rigg's memory. These two were linked by some iron arrows. Through and through. On wife side, every point was harmless. But on husband side, every point was fatal - linking to artery.
After this mess, Rigg went to another location which was a cheap hotel. This time, Rigg discovered the receptionist had committed many crimes. Would Rigg ignore what would happen to this fat receptionist? You need to discover by yourself.
The scene went to two missing detectives. They were trapped together. The left detective was the one we saw in SAW II. He was hanged on a big ice cube. It seemed like if this detective slipped, then the device underneath the ice cube would trigger a vital impact on the right detective. The right detective was sitting and surrounded by water. There was a cable connected between his chair and a generator. Both detectives were guarded by a man. We thought this man was the Jigsaw successor. But he was not. He was also a victim. He was a lawyer and was the survived right man mentioned before.
And, what occurred afterwards? I did not want to mention too much. I wanted to save this pleasure for you.
