Mark pulled a pack of cigarettes from his pocket, took one out, and lit it. The flicker of the lighter illuminated his face, making him look like a vampire.

It was the first time in seven years that I had seen Mark smoke.

"Honestly, I didn't do much. I just slipped Shawn something in his coffee. After drinking it, he'd feel anxious, shaky. That day it was raining. He drank his morning cup and drove Elizabeth back from the summit, and suddenly, there was a car accident." Mark ...