In its star cast “Dexter: Original Sin”the prequel to Showtime and Paramount+’s ‘Dexter’ series, was joined by Patrick Dempsey, the favorite Doctor of the series “Grey’s Anatomy.”

Patrick Dempsey plays him Aaron Spencerthe head of the homicide division of the Miami police and longtime friend of Harry Morgan played by Christian Slater.

“Patrick Dempsey is a beloved actor who is internationally known for the iconic characters he has portrayed. We are thrilled to have him in the star cast of ‘Dexter: Original Sin,'” said Chris McCarthyco-CEO of Paramount Global and president of Showtime/MTV Entertainment Studios.

As it states Deadlineo Patrick Gibson will take on the titular role of the serial killer, Dexter Morganmade famous by Michael S. Hall on Showtime’s original series. They will be joined by, among others Molly Brown, James Martinez and Christina Milian.

According to the synopsis, the new 10-episode drama “tells the events that took place 15 years before the original series began and follows Dexter as he transitions from schoolboy to vengeful serial killer. When his thirst for blood can no longer be ignored, the hero must learn to channel his inner darkness. Guided by his father, Harry (Slater), he adopts a code designed to help him find and kill people who deserve to be eliminated from society without going under the radar of law enforcement. This presents a special challenge for young Dexter when he begins a forensic internship at the Miami Police Department.”

THE Clyde Phillips is at the helm of the production which is underway in Miami.