If Nelson's father, Joplin, asserts a claim against Smythe for the intentional infliction of emotional distress, will Joplin prevail?
No, because Smythe did not know that Joplin was watching. 
No, because Joplin was not within the zone of physical danger
Yes, if Smythe's acts caused Joplin severe emotional distress. 
Yes, if it is found that Smythe's behavior was extreme and outrageous with respect to Nelson. 