Andrew Lincoln enjoys nothing more than "chasing Jeffrey Dean Morgan with an ax."

In a new video on the making of Episode 12, the crew detail how they created the wild fight scene between Rick and Negan.

Go Behind the Scenes of Episode 12, “The Key”

Since the fight takes place in the dark, a "disco bat" with glowsticks attached to it was used to help visual effects track the movement of Lucille.

To light Negan's beloved weapon on fire, silica fabric was inserted into grooves on the bat and served as a wick.

Finding some backstory to justify how Rick comes into possession of his lighter took some digging and, according to Props Master Gilligan Albinski, allowed for a pretty cool Easter egg.

Click here to get a behind-the-scenes look at the episode. Plus, discover the Easter egg you might have missed.

The Walking Dead airs Sundays at 9/8c. Click here to add a reminder to your calendar.

Watch the latest episode now on amc.com and AMC apps for mobile, Fire TV, XBox One, Apple TV, Roku and Chromecast.

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