Following the Specter - Cryptic

This is a short story split into 13 parts for the Spooktober 2023 WA challenge.
This is the fifth part, click the button to read it.
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Cryptic

Dana's heart beat against their ribcage as they trudged after the slow specter. The little amount of lights still available in the eerie hallway flickered, which made the atmosphere appear increasingly sinister. They turned another corner and the hallway became larger. While an Electric leylines flowed at the side of the walkway no overhead lights cast their lights here. The only lights available were the leyline and the eerie light of the specter. Dana pulled their modi from the bag and pulled up the flashlight app. They shone their flashlight towards the walls surrounding them and frowned. There had at least been other youngsters down this way. A little more relieved Dana sighed and followed the specter. Barely looking at the cryptic graffiti that they passed.