Teresa and Thomas keep up a running commentary (get it?) telepathically as the group plows towards the Cliff. Thomas feels protective of Teresa even though he's pretty sure she can hold her own.
Minho leads the group of out-of-shape Gladers until they reach a long alley that leads to the Cliff.
Horrified, they hear the sounds of a large group of Grievers, who apparently have been waiting for them instead of out wandering the Maze. Oh good.
Then, just when they think it couldn't get worse, another large group charges in from behind. The Gladers are officially surrounded.
The Grievers form a circle around them, and then pause, as if they are waiting for something.
Alby, as if he's in a trance, starts walking away from the group and towards the Cliff. Then he starts running right towards the Grievers.
Alby's sacrifice (yeah, the Grievers make quick work of him) gives Newt, Thomas, and Minho the chance to discuss tactics. Unfortunately, however, the one-boy-killed-a-day theory proves to be outdated. Just as they are rallying to get Thomas and Teresa to the Cliff, the Grievers come to life and charge toward them.