Harry Morgan couldn't handle what his step son became. After trying to teach Dexter about responsible killings, Harry was shocked to see the ritual slayings Dexter enacted.
Dexter Morgan is a serial killer and a key member of the forensics departments in the Miami Police Department. His two lines of work often intersect, dangerously, with one another.
The only real question I have is why in a building full of cops, all supposedly with a keen insight to the human soul, is Doakes the only one who gets the creep from me.