Wayne stopped as he approached the next intersection and stared at the walls of the adjoining tunnel. A chalk line had been drawn along the wall, just as before, but this line was purple instead of yellow.
“What does it mean?” asked Andrea.
“It means they ran out of the yellow chalk,” replied Olivia.
Wayne turned and looked right. Facing this way, the blue line was on the left wall. If Albert had remained consistent, this meant that this was the direction they had gone. “It means that this path is fresher than the yellow path. Maybe a lot fresher.”
“Do you think we’re close?” asked Andrea.
“I hope so.” Wayne turned and started down this tunnel, his pace quickened. With any luck, they would see flashlight beams before they saw whatever had made that terrible noise.