The High Lord is the third book in The Black Magician Trilogy that Trudi Canavan wrote and as the High Lord Akkarin has lent Sonea books on black magic so that she could understand the things that the High Lord had told her better it made her come to a decision.

So, she approached Akkarin at one of their, dinners and told him that she wanted to help and that she was willing to learn black magic.

As she knew from what Akkarin had told her that there will be an invasion. Sonea also discovered that Akkarin has been killing spies with black magic.

Then later on in this story Akkarin told Sonea that as he was traveling the world so that he could write a book he became a slave. He also told Sonea that he was taught how to use black magic so that he could kill his master, and he then went back to the guild and took over the position as High Lord.

However, while Akkarin and Sonea was fighting a spy. As Akkarin had allowed Sonea to be there so that she could learn. As he had taught her how to do some black magic like how to make a blood gem etc… they later found out that the high lord was set up.

As Akkarin’s old friend and other authority figures had gone to the high lord’s residence after speaking about the murders. As they thought that Akkarin could have murdered a magician and the magician’s family and servants going by the evidence that they had.

However, neither Akkarin or Sonea was there so they did a search and found some books on black magic in Sonea’s room, and this led to their arrest. They then had to appear at a trial where Akkarin tried telling them the truth. Then Akkarin and Sonea were both publicly exiled although Sonea was only exiled as she defied the King.