A tap on the window

It's been two months since private investigator Cal Weaver's teenage son, Scott, died in a drug-related accident. Cal is mired in grief he can't move past, and that has clouded his judgment. Because he made a grave mistake driving home on a very rainy night. A drenched young girl tapped on his window as he sat at a stoplight and asked for a ride. And even though he knew a forty-something man picking up a teenage hitchhiker is a fool, he let her in the car; she was the same age as Scott and maybe she could help him find the dealer who sold his son the drugs that killed him. But after a brief stop at a roadside diner, Cal senses that something's not right with the girl or the situation. But it's too late. He's already involved.