What Lies beneath

What lies beneath is a good example of a thriller with a strong female lead. It begins slow and spooky which builds the tension and then makes you jump as she sits up suddenly out of the bath. Her heavy breathing makes you wonder what is going on has happened. And also when she gets a electric shock it makes you jump because you are expecting something to happen as the mood is calm and unsure. When she is looking in the mirror it also builds tension.