What are some techniques used to convey the theme of justice in The Lovely Bones?

This is an interesting
question, and one that I would answer by refering to the end of the story and the eventual fate
of Mr. Harvey. The message of the story concerning justice seems to be that your crimes will
catch up with you, and that you cannot outrun justice, even if you do not receive justice at the
hands of law and order. Mr. Harvey is a perfect case in point. Having managed to commit the
apparently perfect crime and then to carry on living next door to the girl he murdered, he
evades every attempt of the police or of Susie's father to accuse him of the murder. It is only
when Susie's sister actually breaks into the house and enters it that suspicions are raised, but
he is able to find enough time to flee. As we come to the end of the story, we are left with the
nagging thought that justice will not catch up with him and he will be free to murder again as
he murdered Susie and so many others before. As he engages another girl in conversation and
plans another rape and murder, Susie watches as his plan turns out somewhat differently than he
expected:

A moment later, the icicle fell. The heavy
coldness of it threw him off balance just enough for him to stumble and pitch forward. It would
be weeks before the snow in the ravine melted enough to uncover him.

This is the major technique that is used to present the novel's
theme of justice, which cannot be outran or evaded. Even though he is not arrested, Mr. Harvey
faces the justice of nature for what he has done.