Michael C. Hall returns as the titular serial killer in Showtime’s revival of the popular series, with the thrilling first full trailer dropping during Comic-Con@Home. This time, Dexter is in hiding, trying to adopt an unassuming life, blend in, and not to let his Dark Passenger take control. So what happens when his past finds him with sniper rifles, violence and blood in the snow? The 10-episode Season 9 kicks off this fall on Showtime.Michael C. Hall returns as the titular serial killer in Showtime’s revival of the popular series, with the thrilling first full trailer dropping during Comic-Con@Home. This time, Dexter is in hiding, trying to adopt an unassuming life, blend in, and not to let his Dark Passenger take control. So what happens when his past finds him with sniper rifles, violence and blood in the snow? The 10-episode Season 9 kicks off this fall on Showtime.