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Posting on the PlayStation Blog, Gary Whitta, former editor-in-chief of PC Gamer magazine, writer of The Book of Eli and the latest episode, said it is "undoubtedly the biggest and most ambitious episode so far in terms of action, and the choices."

"Episode 4 also introduces some brand new characters who should shake things up a bit, including one in particular that I'm very keen for you all to meet. Let's just say that Lee's group hasn't encountered anyone quite like her before now.

"While I think it's a riveting chapter in its own right, Episode 4 is also designed to tee up the big season finale that follows. In that regard I think we've succeeded; the climactic events of Episode 4 should make the wait for Episode 5 even more agonizing."

Telltale has confirmed that the episodic digital series The Walking Dead will be released on disc.