Hannibal Lecter: So, you'll be wanting lots of these little chinwags, I take it.
Will Graham: I might not have time.
Hannibal Lecter: I do. I have oodles.
Will Graham: I thought you might enjoy the challenge. See if you're smarter than the person I'm looking for.
Hannibal Lecter: Then by implication, you think you're smarter than I am, since it was you who caught me.
Will Graham: No. I know I'm not smarter than you.
Hannibal Lecter: Then how did you catch me?
Will Graham: You had...disadvantages.
Hannibal Lecter: What disadvantages?
Will Graham: You're insane.
Answer: His choices had to do with the layout of peoples' property. At his job, he studied customers' family video tapes that contained scenes of their homes and yards. He looked for seclusion around the properties, easy-access back entrances, whether there was a family dog that would bark, and so on.
raywest ★
But what was his reason for killing them? Was it because he saw a happy family and he was angry because he never had one or because he saw a life that he would never have?
He chose the houses that had big backyards. During the Edward Norton/Lecter interaction, Lector says something about how blood looks in the moonlight.