CSI can anyone tell me what happened please?

[SparklyGothKat]

was watching CSI in bed last night and fell asleep in the last 10 minutes..

It was the one about the deaf student who was found murdered by a car and the cafe, which 5 people were shot.

Who killed the deaf boy? was it the headmistress? lol
Who shot the pregnant girl and the other people in the cafe, and why??

I really wanted to help, as I have seen this episode before, and I was watching it last night, but now, thinking about it, I can't really help, because I was in and out. I know the deaf student was killed by two boys, because they thought he was ignoring them, but he couldn't hear them (I think) and the shooter was a man who had gone in to shoot the person in the back room, and ended up shooting loads of other people because they were in the wrong place at the wrong time.

I'm glad I helped clear that up for you

the man was the boss of the pregnant girl. he'd got her pregnant and that's why he kiled her. everyone else was in the wrong place. not sure that's any better!

which csi was it, i mean ny, lv or m