A missing professor. Some nefarious men in gray suits. And a dreamworld called the Troposphere? Ariel Manto has a fascination with nineteenth-century scientists--especially Thomas Lumas and The End of Mr. Y, a book no one alive has read. When she mysteriously uncovers a copy at a used bookstore, Ariel is launched into an adventure of science and faith, consciousness and death, space and time, and everything in between. Seeking answers, Ariel follows in Mr. Y’s footsteps: She swallows a tincture, stares into a black dot, and is transported into the Troposphere--a wonderland where she can travel through time and space using the thoughts of others. There she begins to understand all the mysteries surrounding the book, herself, and the universe. Or is it all just a hallucination?

    A well-timed leak has revealed that the US government might have engaged in first contact. Cora Sabino is doing everything she can to avoid the whole mess, since the force driving the controversy is her whistleblower father. Even though Cora hasn’t spoken to him in years, his celebrity has caught the attention of the press, the Internet, the paparazzi, and the government—and with him in hiding, that attention is on her. She neither knows nor cares whether her father’s leaks are a hoax, and wants nothing to do with him—until she learns just how deeply entrenched her family is in the cover-up, and that an extraterrestrial presence has been on Earth for decades.Realizing the extent to which both she and the public have been lied to, she sets out to gather as much information as she can, and finds that the best way for her to uncover the truth is not as a whistleblower, but as an intermediary. The alien presence has been completely uncommunicative until she convinces one of them that she can act as their interpreter, becoming the first and only human vessel of communication. Their otherworldly connection will change everything she thought she knew about being human—and could unleash a force more sinister than she ever imagined.