"Dexter" will ratchet up his impressive body count for two more seasons on Showtime, according to zap2it.com.

Showtime recently signed a new deal with actor Michael C. Hall and renewed the series for a seventh and eight season, each featuring 12 episodes.

"'Dexter's' enormous success is a real tribute to the great achievements of its cast, producers and the powerhouse performance of Michael C. Hall," said David Nevins, Showtime Entertainment president. "The series is bigger than it's ever been in its sixth season, both in terms of audience and its impact on the cultural landscape.

"Together with Michael, the creative team on the show has a very clear sense of where they intend to take the show over the next two seasons and, as a huge fan, I'm excited to watch the story of Dexter Morgan play out."

The series follows a serial killer (Hall) who holds a job as a Miami police forensics specialist while quenching his thirst for the kill by hunting criminals who he believes have escaped justice.

Season 6 of "Dexter" currently nets new rating highs -- counting multiple airings, DVR and on-demand viewing -- and pulls in 5.1 million viewers each week. The previous five episodes have improved ratings each week.

Hall was nominated for four Emmys and won a 2010 Golden Globe for his performance.

Season 7 will lens next year with an expected premiere in the fall.

"Dexter" also stars Jennifer Carpenter, C.S. Lee, James Remar, Desmond Harrington, Lauren Vélez, David Zayas, James Remar.