El showrunner principal se fue porque él planteó un serie de seis temporadas. En el final de la quinta Deb descubre el secreto de Dexter (los otros showrunner quisieron que Deb viera a Dexter tras una lona y le dejara escapar) y la sexta temporada iba a ser como la segunda, caza y captura de Dexter, pero en vez de con Doakes y Lundy quizás ahora con LaGuerta o Batista o algún nuevo personaje
Creo que fue cuando se hizo el hilo de la sexta temporada o en alguna entrevista en Reddit, no sé, pero el capítulo final de la sexta temporada (y capítulo final de la serie) se llamaba Electric Chair, lo cual nos da una idea de cómo quería finalizar la serie el showrunner principal
edit:acabo de encontrarlo
spoilerFound this from Clyde Phillips. Thought it would be perfect.
"In the very last scene of the series," Philips explained, "Dexter wakes up. And everybody is going to think, 'Oh, it was a dream.' And then the camera pulls back and back and back and then we realize, 'No, it's not a dream.' Dexter's opening his eyes and he's on the execution table at the Florida Penitentiary. They're just starting to administer the drugs and he looks out through the window to the observation gallery. "And in the gallery are all the people that Dexter killed—including the Trinity Killer and the Ice Truck Killer (his brother Rudy), LaGuerta who he was responsible killing, Doakes who he's arguably responsible for, Rita, who he's arguably responsible for, Lila. All the big deaths, and also whoever the weekly episodic kills were. They are all there. "That's what I envisioned for the ending of Dexter. That everything we've seen over the past eight seasons has happened in the several seconds from the time they start Dexter's execution to the time they finish the execution and he dies. Literally, his life flashed before his eyes as he was about to die. I think it would have been a great, epic, very satisfying conclusion."