The Walking Dead - Season 3, Episode 4 - Rotten Tomatoes


Critic Consensus: With the shocking loss of two main characters, "Killer Within" doesn't hold back on delivering finale-level action.

Episode Info

Lives are endangered when the group gets separated, while in Woodbury, Merle makes an appeal to the Governor.


Andrew Lincoln
as Rick Grimes
Steven Yeun
as Glenn, Glenn Rhee
Chandler Riggs
as Carl Grimes
Norman Reedus
as Daryl Dixon
Melissa McBride
as Carol, Carol Peletier
Danai Gurira
as Michonne
Scott Wilson
as Hershel Greene
Lauren Cohan
as Maggie Greene
David Morrissey
as The Governor
Michael Rooker
as Merle Dixon
Emily Kinney
as Beth Greene
Larry Gilliard Jr.
as Bob Stookey
Michael Cudlitz
as Abraham Ford
Alanna Masterson
as Tara Chambler
Christian Serratos
as Rosita Espinosa
Josh McDermitt
as Eugene Porter
Seth Gilliam
as Gabriel Stokes
Lennie James
as Morgan Jones
Alexandra Breckenridge
as Jessie Anderson
Austin Nichols
as Spencer Monroe
View All

Killer Within Photos

Critic reviews for Killer Within

When Season Three of The Walking Dead is released on a DVD box set, they sure aren't going to print "The feel-good comedy of the year!" on the back.

July 29, 2015 | Full Review…

"Killer Within" has all the game-changing moments of a season finale.

July 29, 2015 | Full Review…
Top Critic

Four episodes into this bleak third season, showrunner Glen Mazzara's greatest accomplishment may have been bringing the series in line with its setting: It's an unapologetically grim and horrific show about a grim and horrible world.

July 29, 2015 | Full Review…

Once again, the point is driven home (like a spike through a zombie's head) that there is no room for compassion in this world.

June 20, 2018 | Full Review…

Wow. Just wow. Hearbreaking and tense as we found "Killer Within" to be, we expect this to be one of the most hotly-debated of The Walking Dead episodes.

June 11, 2018 | Full Review…

This is a jarring and haunting entry of the series that for the time being at least, seems intent on being a serious drama and horror series alongside its more baser zombie roots. An applauded decision to be sure.

July 29, 2015 | Full Review…

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