who are the main characters in the episode mentioned at the beginning?
Rick Grimes, Shane Walsh, Chandler Riggs and others.
Bloodletting (The Walking Dead)
In this episode, Rick Grimes (Andrew Lincoln) and Shane Walsh (Jon Bernthal) rush to save the life of Rick's son, Carl (Chandler Riggs), and discover a possible safe haven in the process.

walking dead episode carl gets shot in the eye UNANSWERABLE is it a series or a film? Television series. which network was it initially aired? Through AMC in the United States and internationally through the Fox Networks Group. what is the storyline of this episode? This episode revolves around Carl who has been shot . His mother, father along with others try to save him. is the series based on a book? Yes, on a comic book series of the same name. who is the writer? Robert Kirkman, Tony Moore, and Charlie Adlard. who is the former? An American comic book writer. what are his other well know novels? He has co-written a series of non-graphic "The Walking Dead" novels with writer Jay Bonansinga.
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Bloodletting (The Walking Dead) [SEP] Introduction
The episode featured guest appearances from Scott Wilson, Lauren Cohan, Emily Kinney and Pruitt Taylor Vince, amongst several other recurring actors and actresses for the series. "Bloodletting" was well received by television critics, who praised the character development in the episode. Upon airing, it gained 6.70 million viewers and garnered a 3.6 rating in the 18-49 demographic, according to Nielsen ratings.