Night, Alone in the dark street where the light source is low

you see something watching you from behind, but when you look behind, there is nothing here. But you swear you can feel something following you. And when you look again you see someone peaking and they instantly hide It could be hallucinations or someone REALLY stalking you. You have 3 choices. 1. Find and Fight them 2. Running away back home 3. Call a police (higher chance to be killed or kidnapped before they arrived.)