Diego Arandojo and Jorge Fantoni\'s graphic novel The Hidden River tells the story of real and fictional Argentine authors, investigat- ing and collecting disparate anecdotes of secret societies, connecting strands of a plot hidden in the shadow of Buenos Aires, that extend out to entangle some of the most notable occultists of the 20th Century. (W) Diego Arandojo, Jorge Fantoni (A) Jorge Fantoni, Diego Arandojo