The Walking Dead Season 6: 10 Most Shocking Moments (So Far)

10. The Horn

The sound of that horn alone was enough to send shivers down the spine. After a calculated, military-precise operation to lead the walkers away from the quarry pit, Rick and the group's great work was completely undone by the blaring noise from back at Alexandria. We later found out the cause of the horn, but at the time it was incredibly shocking to see the plan go so horribly wrong, and obviously the horn could have only signalled some sort of conflict that we had no idea about. It was carried out perfectly, and the sound was hauntingly loud as it drew masses of the undead back towards the rest of the group at home.