“Dexter” executive producer Sara Colleton tells TV Guide:
We wanted to end it this year, but the network convinced us that it would be best to do it in two years. In some ways, this is a two-season series-ender. We have worked that out and know where it's going to end. Next year will definitely be the last year of Dexter. Absolutely.
Showtime launches “Dexter’s” penultimate season Sept. 30.
Find all of Colleton’s interview with TV Guide here.