A teenaged pickpocket, haunted by the ghost of his brother killed by his father, is recruited for Mandel Academy, a school for criminals where only one student survives each semester.
Haven Moore and Iain Morrow leave Rome and head back to New York after Haven's friend Beau mysteriously disappears, andencounter the Horae, an underground group of women who agree to help Haven discover Beau's whereabouts in one of her past lives if she will in exchange infiltrate the Ouroboros Society and lure Adam Rossiter into a trap.
Haven must infiltrate the Ouroboros Society, charm Adam Rosier, and lure him into a trap, a plan the group known as the Horae believe will save the world--but Haven and Iain fear that it may destroy the happiness they've been chasing.
Life becomes more interesting for Ananka Fishbein when, at the age of twelve, she discovers an underground room in the park across from her New York City apartment and meets a mysterious girl called Kiki Strike who claims that she, too, wants to explore the subterranean world.
Fourteen-year-olds Ananka Fishbein, Kiki Strike, and the other Irregulars encounter a Chinese mummy, a ghost, trained squirrels, and old enemies as they try to stop an art forgery ring and safeguard the secret streets hidden beneath New York City.
Haven Moore has recurring visions of a romance from a past life that ended tragically, and when she sees playboy Iain Morrow on television, she goes to New York to meet him and discover if he is really the lover from her dreams.
