Thriller Opening Summary

It starts with an opening shot of a man walking his dog, (close to train tracks/in the forest.. walking away from the camera). He then walks past a newspaper which is now the focus of the shot, and all the pages are credits containing still images taken from the upcoming shots, and the titles are credit sub headings. Another page another credit.. Tension is built up with music then falls on a newspaper page with a heading saying 'Missing?' with a still images which then fades into the opening by the camera zooming in on it. The image it zooms in on is a picture of location (train tracks), this is then the establishing shot of the setting. Then we see the man who is walking his dog come into the shot, walking towards the camera from around the corner. He then stops in his tracks after the dog brings his attention to something he notices something on the floor. It's a lifeless hand containing a scrunched up note wearing a ring (which is of significance). The man cautiously bends down and picks up the note, he unravels it but the audience will never know what is written on it. He then drops it and through a point of view shot we see him dial 999, as he is doing this the man is hit on the head, he drops his phone and falls to the floor. The camera then goes back onto the lifeless hand... then a flashback is used! The hand fades onto a new scene where it begins on the same girls hand who is now typing on the computer wearing the ring so it is clear that it is the same girl, as she is obliviously typing away on her computer, there is a knock at the door and a letter is left on the mat outside the front door. The girl opens the door picks up the note and reads it, again we do not see what it says as we only see her reaction to it. The shot of her opening the letter then fades into the shot of a man walking on the train tracks. The opening ends on a pair of hands in black gloves, the same ones that hit the man over  the head, moving cuts of newspaper letters around on a table, which we will speed up  and then it will spell out the title of the film.