from the curse of being forced to fall in love with all those to fall upon the island rather than the island itself. Leo and Calypso subsequently fall in love legitimately. After Leo escapes, he swears on the River Styx that he will return for Calypso. At the end of The Blood of Olympus, Leo gets back to Ogygia and frees Calypso using an astrolabe that Odysseus had built for that purpose, although he was unable to complete it without a crystal from the island that Calypso had given to Leo on his first visit. In The Hidden Oracle, Calypso comes to Camp Half-Blood with Leo and reveals that, due to her choice to leave Ogygia, she has become a mortal. She accompanies Leo and Apollo in the latter's quest to find the Oracles and stop the Three Emperors from conquering North America. Despite this, the two secretly attempt to find a normalcy for their lives and later announce to Apollo that they are going to settle in Indianapolis, although they will continue to help him anyway they can. At the end of The Dark Prophecy, Calypso stays at the Waystation, while Leo goes to warn Camp Jupiter of an impending invasion and Apollo travels with Meg to search for the Erythraean Sybil. During The Dark Prophecy, Calypso regains her ability to use magic, although the goddess Britomartis suggests that she had simply lost control of her powers rather than losing them altogether. With training from Josephine, Calypso begins regaining control over her magic. As a sorceress, Calypso can command wind spirits to do her bidding. She loses most of her control of them when she gives up her immortality; however, she is still capable of summoning them to a degree, though by consuming more power than usual. Also, due to spending a long time at Ogygia, she has mastered sewing and lock-picking, which she uses while finding the gryphons at Indianapolis Zoo. She is Leo's girlfriend as of The Blood of Olympus, The Hidden Oracle, The Dark Prophecy, and The Burning Maze. In The Tower of Nero, Leo reveals that Calypso is enjoying attending high school and is currently working as a counselor at a mortal band camp for kids. The two are currently in a fight due to Leo's disrespectful behavior towards women, but both Leo and Reyna are sure that they will work it out when she