Stalker Sequence

When a character has a rather vicious alien creature stealthily nibbling his or her ankles when all of said character's marine teammates have been killed off, the suspect of the week decides to pursue the genius police investigator when he realizes that said investigator knows too much or when a steel killing machine from the future thinks the character is somehow connected to a certain rebel leader and begins to relentlessly hunt said character without halt or remorse, you can be sure the character has ended up in the Stalker Sequence.

Generally, this is any scene where a lonely hero or important character is chased by the villain. It is a stock trope of the horror genre and has been since the very beginning, used most extensively throughout the 1980s horror wave. Interestingly, the Stalker Sequence has lately become quite prevalent in thrillers and crime shows such as CSI, inducing moments of Fridge Logic. It is used primarily to add suspense, and can be furnished with various visual subtropes, of which Epileptic Flashing Lights is most common in sci-fi.