(Spoiler warning: Don't read this if you don't want to know what happens in the "Dexter" season finale.)
"Dexter" is a show obsessed with blood. So maybe fans shouldn't have been so surprised — to say nothing of shocked, baffled, and repulsed — by the so-called "incest" storyline between siblings Dexter and Deborah Morgan this season.
The pair aren't blood relatives, after all: Show runner Scott Buck tells TheWrap that writers have considered the possibility that Deb (Jennifer Carpenter) might carry romantic feelings for Dexter (Michael C. Hall) almost since the start of the show, even though it took her until Sunday's season six finale to truly realize it.