JK Rowling never tells her readers about Harry Potter learning about Tarot, nor is it ever mentioned during his Divination lessons. Despite this, Professor Trelawney abruptly reappears in Harry Potter and the Half-Blood Prince , even though she is no longer Harry’s teacher by the time he’s in his sixth year. In just about every appearance she makes in the sixth book she is raving about the Tower , also called The Tower of Destruction , or La Maison Dieu ( The House of God ) in French, the sixteenth card in the Tarot Major Arcana. Trelawney ranting about this card is the first overt mention of Tarot in the seven books, and it is a virtual throwaway. It is not, however, the first mention of the name of a Tarot card in the series . In Harry Potter and the Goblet of Fire , Rowling calls the Little Hangleton pub frequented by Frank Bryce, the caretaker at the Riddle House, The Hanged Man. This is the name of the twelfth card in the Tarot Major Arcana. JK Rowling has also invente