[The house that Tybalt and Dave eventually pinpointed as the one with the demigod is on the outskirts of town, by itself. The whole area feels tense and unwelcoming.
The reason the demigod hasn't left yet is the stepfather. The stepfather is paranoid and does not trust the outside world. Annabeth and Steve will have to think up a way to get him to let his stepkid come to camp.
And if they think they see someone on the edges of the property or near the house, well. They must be seeing things]
THE ACTUAL RETREVIAL
The reason the demigod hasn't left yet is the stepfather. The stepfather is paranoid and does not trust the outside world. Annabeth and Steve will have to think up a way to get him to let his stepkid come to camp.
And if they think they see someone on the edges of the property or near the house, well. They must be seeing things]