Trained as a clairvoyant and fortune-teller, Isobel Martin becomes part of Le Cirque des Rêves via her relationship with Marco Alisdair. They meet for the first time in London, when Marco realizes that he has misplaced his notebook filled with magic lessons, and he finds Isobel reading it with interest. The two move in together in London, and Marco lets Isobel know about the magical competition with a mystery opponent. When he realizes that he is competing against Celia Bowen, an illusionist with Le Cirque des Rêves, Isobel offers to join the circus and keep watch over Celia and her magical creations. All along, however, Isobel has had a sense that there is something more to the relationship between Celia and Marco, based on the readings she gets from her tarot cards. When Isobel finally learns that Marco is in love with Celia, Isobel decides to leave the circus, knowing that she will only be in the way. Before she leaves, however, she reverses a protective spell she placed on the circus years before, which starts in motion a chain of events that end in the tragic death of Herr Thiessen, the clockmaker and one of the original revêurs.