Prior to Ross's departure, Adam didn't detect anything, but upon his return, Adam was immediately struck by a clear sense of danger. 

It was quite apparent that the warden had told Ross something that was very detrimental to Adam's situation.

"Done?" Ross asked as soon he returned.

"No, I just started eating," Adam replied.

"Then hurry up. After dinner, we'll go to the showers. The showers are the best place in this prison. The flow of water is really strong, strong enough to wash away all blood, no matter how much someone bleeds. Come with us to the showers and help us kill a guy called Blood Thorn. That'll count as your pledge to our gang."

"Pledge?"

"A pledge is a show of allegiance. Basically, you have to do something to show the gang your courage and loyalty. Even in the outside world, if you try to join a gang, they'll...