There's no doubt anymore. Veil has a serial killer.

Once the news spreads, the town is awash with dread and suspicion. People look at one another and wonder: which one of them is the killer? Which one of them is next on his list?

Violet thinks she possesses a clue to the killer's identity, but it's hidden in an elusive memory. To jog it, Violet and the Grogans must venture out along a hiking trail, searching for the source. Meanwhile, at home, the deputies patrol the town, hoping to catch the killer before he claims another victim...