Nathan Foster reviewed the times when South Grant's violent personality surfaced, which was almost always triggered by external stimuli, mostly because of the children.
Nathan Foster clearly remembered that this violent personality had once told him that Nathan had personally killed his own child.
Nathan Foster seemed to have found the link between South Grant's dominant and secondary personalities.
At this moment, he turned around and went to Vincent's therapy room on the top floor, leaving everyone downstairs looking at each other in confusion.
The entire top floor was sealed off; no one could enter, whether it was from the elevator entrance or the emergency exit, all were guarded by security arranged by Nathan Foster.
Nobody knew what was happening there. When Nathan entered the therapy room, Vincent was observing South Grant through a glass.
