Are you looking for some other literature with which to compare the theme of revenge? I am not sure if this is what you are asking, but if so, what about the theme of revenge in The Count of Monte Cristo? In this novel, Dantes learns in the end that revenge is destructive and that forgiveness is redemptive. Heathcliff does not learn to forgive, and it destroys him. This is perhaps why he is haunted by Catherine's ghost. Maybe you have already used this with regard to your theme of revenge.

Are you looking for other works that use ghosts as messengers? Ghosts are often symbolic ways in literature of sending a message to the living. Think about the ghost in A Christmas Carol. In this story, Scrooge learns, from Marley's ghost, that he needs to change his ways. The ghost is sent as a warning. You could also use the ghost of Hamlet's father. In this play, the ghost wants Hamlet to seek revenge for his murder. There are also a lot of short stories that feature ghosts or people rising from the dead (or people imagining that they are seeing ghosts) - The Fall of the House of Usher comes to mind, or The Tell-Tale Heart. Also, what about Macbeth and Banquo's ghost? If you want something more modern, in The Lovely Bones, the murdered girl, Susie Salmon, is looking down from heaven, trying to get people to figure out who killed her. Some characters in the story "sense" her spectral presence, although she isn't really a true ghost. Nevertheless, she is seeking that her murder be solved and in a sense, vengeance -- although it is more like justice.

If this is not what you are asking, please re-post so that we can help you further.

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