What are Warren's predictions?

Warren’s predictions all concern death. They are thought to be the ramblings of a mad man, except by Marn due to the visions that she herself has. Warren predicts that Marn will kill someone, which she later does by way of Billy to free herself and her children from his control. Warren, having murdered the Lochern family, now presumably can sense death around him, such as was the case with Marn. In the hospital, Warren’s mind misfires, causing him to tell those around him he will “kill them all”. This is in direct reference to his killing of all of the Locherns. This means that Warren had intended to kill the Locherns before he did –but for what reason is never truly revealed, though it can be argued that psychological trauma from military service deeply affected him.