Write a suspenseful scene in which a character is being stalked in a dark alleyway at night

Write a suspenseful scene in which a character is being stalked in a dark alleyway at night. The sound of footsteps echo off the walls, the streetlamp flickers ominously, and the character’s heart pounds in fear as they try to escape their unknown pursuer. Describe the feeling of being watched and the increasing sense of dread as they realize they may not make it out of the alleyway alive.