Re: Dexter - Part 3
I agree with all of the Deb did it herself theories. In that scenario Hannah had nothing to gain, like she said all that would result is pissing off her serial killer boyfriend and alerting the police department to her activities. Furthermore, Hannah's friend like she suggested wouldn't prove a reliable eye witness - especially after it came out that Deb showed up and threatened her with taking her kids away if she didn't cooperate.
What you're left with, casualty wise, is just the 50th worst air disaster. Actually TIED for 50th!