Four Kingdoms, The

A rash idea, you think to yourself. Always better to plan things out. You follow in line behind the last zombie, tailing him by a few yards. Keeping low to the ground, you watch as the group makes turns and eventually comes to a stop. What's going on? You snap to attention as you hear a voice to the front of the group.
"We have a traitor among us!"
Have you been found out? No time to think, you have to act fast!