Just when alls set to kick off with the enclosed bunch of walkers, with Ricks plan about to work to perfection, a spanner is thrown into the works. Well, maybe not a spanner, more a horn. With all falling into place perfectly, an uber-loud horn begins to sound, which serves to lure the walkers away from Ricks plan. Even worse for our group, the noise seems to be emanating from Alexandria, meaning the huge group of walkers are stumbling their way to the apparent safe-haven. This all throws up plenty of questions ahead of the next episode, such as why is the horn going off, who has set it off, what will happen when the walkers make it to Alexandria, and then the most intriguing question of all just who else will the horn attract to the walled community?