Sundiver is a 1980 science fiction novel by American writer David Brin. It is the first book of his first Uplift trilogy, followed by Startide Rising in 1983 and The Uplift War in 1987. Plot summary The novel begins with the main character, Jacob Demwa, working at the center for uplift on Earth, while he recovers from a tragedy at the Vanilla Space Needle where he saved the space elevator from destruction but lost his love in the process. An alien friend of Demwa's, Fagin (a Kanten), contacts Demwa and offers him a job. Initially reluctant to return to his previous life as a scientific investigator, Demwa agrees to attend a secret meeting. He learns that there are "ghosts" appearing in the Sun's chromosphere. The ghosts are without precedent in the galactic library. Demwa agrees to come and investigate the origin and purpose of the sun-ghosts, and travels to Mercury where the sundiver project is based. With him on Mercury are Helene deSilva, an attractive station commander with whom Jacob develops a relationship over the course of the book; Fagin; Pila Bubbacub, the library representative; his assistant Culla (a Pring); Dr. Dwayne Kepler (the head of the Sundiver expedition); Dr. Mildred Martine (a psychiatrist); and the exuberant journalist Peter LaRoque. Demwa goes to the sun, and observes the sun-ghosts. There are apparently three forms: the "toroids" which appear to be similar to cattle and live off of the magnetic fields in the chromosphere, a relatively fluid, apparently intelligent variety, and a threatening, strangely anthropomorphic figure that avoids the side of the sunship where the instruments are located. When a neo-chimpanzee scientist, Dr. Jeffrey, is killed on a solo mission to the sun, it seems to confirm the sun-ghosts' hostile intent. An investigation seems to implicate the reporter, LaRoque. LaRoque is then tested to determine if he is capable of murder. The test results indicate LaRoque has violent tendencies and he is incarcerated. A third trip to the sun is undertaken, in hopes that Pila Bubbacub will be able to contact the sun-ghosts. It fails to do so, but claims to have succeeded, saying that the sun-ghosts are offended and have used psi to control LaRoque's actions. He uses a powder that blocks the ship's sensors to pretend he has dispelled the sun-ghosts because he is embarrassed by the Library's lack of data on the ghosts. Back on Mercury, Jacob discovers