== Possible OR  for the phrase "the Mother's Son" == 

 Article quotes writer Grant Morrison - 

  
 the story is woven tightly around a small number of symbolic elements, which combine and recombine throughout, as if in a dream: the Moon, the Shadow, the Mirror, the Tower, and the Mother's Son.  

  
 Most of these  symbols are  linked to the corresponding card of Tarot,  but "the Mother's Son" is  linked  to Psycho (film). Is this original research (WP:OR)?   Do we have a reliable  third-party source (WP:SOURCE) for this reference?