Literary works can be analysed in the framework of network theories, as proposed in 2011 by the Stanford Literary Laboratory in some of its experiments. In fact, the plot of a play or a novel can be displayed as a network of interacting characters, where the timeline of the plot is projected on a planar graph. This approach can help in highlighting some features of the literary work. Here in the image, it is shown the Harry Potter’s social network, as we can obtain from “Harry Potter and the Philosopher’s Stone” (or Sorcerer’s Stone), the J.K. Rowling's debut novel, published on 26 June 1997. A small part of the network was already proposed in [1]. In the same article, we detailed in the appendix the edges between vertices, that is the links among characters. [1] Amelia Carolina Sparavigna, On Social Networks in Plays and Novels, International Journal of Sciences 10(2013):20-25 DOI: 10.18483/ijSci.312