The sound of breathing: slow, deep.
INT. ABANDONED FACTORY HALL - NIGHT
Fearful eyes, extremely focused, trying to see in the dark. Sweat on the upper lip. A WOMAN (39) in a smudged, yellow summer dress is moving along a wall of a dark factory hall, hands touching the concrete for support. Hair wet with sweat. Her breathing is heavy, but she tries to be very, very still...
She freezes; where did it come from? Behind her? In front of her? Again: metal on metal, a hammering echoes in the hall.
In panic, her breath runs wild. With bulging eyes she looks around from under her black hair, plastered on her forehead with sweat. Where to hide?