What can Dexter fans expect on this Sunday's third season finale?

According to series runner Clyde Phillips: "The finale is a thriller, and it's ironic, and the last image is wistful and humorous...and ironic."

But will it be ironic happiness for Dexter and Rita? Here's a preview of the episode:

[video url="/videos/dexter-season-finale/" title="Dexter, Season Finale"] [/video]

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.