EW in 2013:

When we last saw Yvonne Strahovski as Hannah McKay in the seventh season finale, Hannah had escaped from prison, and Dex was seemingly lucky to get away from her. “We both knew it would come to this, one of us dead or behind bars,” Dexter said. With Hannah returning, we suspect this time one of them (or both?) won’t escape so easily.

Too bad the final season of Dexter was so disappoint.

If you're going to watch it, stop after season 4.

Although then you'll miss Yvonne in the show, unfortunately.

Yvonne Strahovski at Part of Me premiere, 6-26-2012: http://imgur.com/a/ebObM