Alive or Undead?

The hallway split, to the left and right. Heading left, the heroes entered a room full of some of the most gruesome abominations they have ever discovered. To the point many of them wretched.

Upon further examination, it looked as if someone was trying to fuse living and undead into some sort of hybrid abomination. In each corner of the room, a half living, half undead, person was chained. In the center of the room, chained to a table, was another. He turned to the heroes upon their entrance, and spoke: "So cold, help us. Release us."

As he continued to beg, the heroes discussed their choices and in the end opted to leave them chained in the room and piton the door shut.

For a change, Alexander's hunch of wanting to kill them, was correct. Had they been released, their undead nature would have eventually overcome their humanity and they would have attacked.