What are some really good thriller movies?

i like to watch thriller movies but can only handle PG-13 ones because
I don't like blood and I don't like really disturbing images.

Here are some that I've watched already:
Paranormal Activity
The Grudge 1  2
The Uninvited
The Sixth Sense
Signs
The Mist
The Messengers
When A Stranger Calls
One Missed Call
All the Final Destinations
Scream
I Know What You Did Last Summer (all of them)
1408

I think that's all lol.
Could you help me find a really good one? Thank you!