characteristics of a good thriller opening

It has to thrill the viewer and create suspense.
Thriller locations have to be in eerie places.
Thrillers are mysterious and intriguing. They make you want to watch more.
Right from the word go the opening has to keep watcher interest throughout and keep you on the edge of your seat continuously.
Dont give away too much of the plot of the film in the opening scene. Keep it mysterious.
Dramatic and effective music in keeping with the action.

BY ASHLEY AND CORNNER :)