According to Robert Kirkman at SDCC 2016, reading the book "Treating Survivors of Childhood Abuse (episode 5.06)," led Daryl to take a chance on Dwight.
At the 2015 Critics Choice Awards, The Walking Dead was named the "Most Bingeworthy Show."
Chad L. Coleman (Tyrese) revealed that Andrew Lincoln "wiped out" while carrying him in episode 5.09 (what's Happing and What's Going On).
The gun Nicholas shoots himself with, is Rick's gun he hid in the blender.
According to the show runner, Dave Ericson, Nick lost his biological father when he was 13. Nick's addiction issues started shortly after his father's death.