Sarah Michelle Gellar cast in Dexter prequel Original Sin
Sarah Michelle Gellar has been cast in a special guest star role as Tanya Martin, the CSI chief at the Miami Metro Police Department and Dexter Morgan’s new boss. She joins previously announced cast members Patrick Gibson (Dexter), Christian Slater (Dexter's father Harry), Patrick Dempsey (Aaron Spencer), Molly Brown (Dexter’s sister Debra, James Martinez (Angel Batista), Christina Milian (Maria LaGuerta), Alex Shimizu (Vince Masuka), and Reno Wilson (Bobby Watt).
Prequel synposis:
Set in 1991 Miami, Dexter: Original Sin follows Dexter as he transitions from student to avenging serial killer. When his bloodthirsty urges can’t be ignored any longer, Dexter must learn to channel his inner darkness. With the guidance of his father, Harry, he adopts a Code designed to help him find and kill people who deserve to be eliminated from society without getting on law enforcement’s radar. This is a particular challenge for young Dexter as he begins a forensics internship at the Miami Metro Police Department
source