Dexter 8x04 Promo - Season 8 Episode 4 - Video Preview - Scar Tissue

Here's the video preview and sneak peek of Dexter Season 8 Episode 4: "Scar Tissue" on SHOWTIME.

Quinn passes the sergeant's exam. Dr. Vogel begins treating Debra.

Dexter and Vogel meet to discuss their investigation.

Dexter 8x04 Promo 'Scar Tissue' - Dexter tracks down another potential serial killer from Dr. Vogel's list; Quinn defends Debra's honor in a fight; Vogel begins treating Debra for post-traumatic stress disorder. Original Air Date: Jul 21, 2013