Danger Word

Danger Word was different from the definition of zombies that we are currently familiar with. Instead of being obviously zombie-like and unable to speak, these zombies can barely be differentiated from actual humans. For example, Joe couldn't tell if Mike was human or zombie because he looked fine and could say coherent things. I didn't like this version of zombies because even though Joe was always really careful about everything, he still became a zombie in the end due to the small differences between humans and zombies.