Greg Nicotero shares the secret to a new breed of walker.
But there was another shot in that trailer that also lit up the fanbase almost literally.
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So how did they create these new bioluminescent hungry ones?

Bioluminescent zombie on ‘The Walking Dead: Daryl Dixon — The Book of Carol’.AMC
And 70 percent of that was practical effects.
The makeup and visual effects teams then worked together to create the final look.
But it turns out they could only film these special zombies for two minutes at a time.

Bioluminescent zombie attack on ‘The Walking Dead: Daryl Dixon — The Book of Carol’.AMC
We did stuff where we were able to make the inside of the mouth glow, Nicotero reveals.
We wanted to see to it that they looked different, so we went with black contact lenses.
The DNA comes fromGeorge Romero.

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check out ourbig cover storyon how the season will connect back to the characters first meeting ever.