In the Dexter Season 8 finale, Dexter attempts to leave for Argentina with his son and love interest Hannah (Yvonne Strahovski), but his plot is foiled by private detective Jacob Elway. Meanwhile, Deb Morgan (Jennifer Carpenter) is shot, rushed to the hospital, and has a stroke — thanks to serial killer Oliver Saxon.

Who shot Deb on Dexter?

Christine Hill - Suspected of being the one who shot Debra and killing Frank on the fact that she knew that Deb was looking into Lundy eyes when he died, and that detail of the crime was never revealed.

Why did Dexter dump Deb in the ocean?

First off, Deb. Dear god what did they do to poor Deb. She was shot in the penultimate episode, but for most of the finale she seemed like she was going to recover. But then nope, she had a stroke and was basically a vegetable and so Dexter pulled the plug and tossed her into the sea.