Joe Otterson TV Reporter“The Walking Dead” continues to live on at AMC, with the network greenlighting a spinoff centered on Maggie and Negan.Both Lauren Cohan and Jeffrey Dean Morgan will return for the spinoff, which is currently titled “Isle of the Dead.” The six-episode series will see the two characters traveling into a post-apocalyptic Manhattan long ago cut off from the mainland. The crumbling city is filled with the dead and denizens who have made New York City their own world full of anarchy, danger, beauty, and terror.