If you have ever dreamed of playing a zombie in the US cult series The Walking Dead, we have bad news; there are far fewer extras on the set that you may think.

This is only one of the dirty little secrets revealed in a video posted on Vimeo by the visual effects house Stargate Studios. Here’s a surprising behind-the-scenes look at how one of our favorite shows is made:

Walking Dead Season 2 VFX Reel from Stargate Studios on Vimeo.