Alien Nation was a science fiction novel series, based on the movie and television series of the same name. It began in March 1993 with Pocket Books publishing the series. Various books of the series were written by L. A. Graf, Peter David, K. W. Jeter, Barry B. Longyear, David Spencer, Garfield Reeves-Stevens and Judith Reeves-Stevens. All of the books follow the adventures of the Human Detective Matthew Sikes, and his Tenctonese partner George Francisco. Like the TV series, most of the books have two parallel storylines that converge at the end, and most of the novels take modern day issues and put a slightly alien twist on them. Alien Nation: A Novelization This book was written by Alan Dean Foster, and was released in 1989. It is an adaptation of the movie. Alien Nation #1: Day of Descent This book was written by Judith and Garfield Reeves-Stevens, and was released in 1993. It is a prequel to both the movie and television series, in the months leading up to the arrival of the Tenctonese on Earth. Matthew Sikes, a rookie detective, is on his first murder investigation when he stumbles onto a deadly conspiracy that threatens his whole world. Light-years away, a Tenctonese slave named Stangya Soren'tzahh (later to be known as George Francisco) is swept up into his people's fight for freedom against their ruthless masters, the Overseers. The slave ship crash lands on Earth, where Matt and George unknowingly work together to prevent a disaster that could destroy both their species. Alien Nation #2: Dark Horizon This book was written by K. W. Jeter, and was released in 1993. It was released prior to the production of the television movie of the same name. It was written to tie up some of the loose ends of the Alien Nation series at a time when it looked like it was never going to return to television. It recaps the events of "Green Eyes", the last episode of the series, and used the un-produced script from "Dark Horizon", the first episode of what would have been the second season. The Tenctonese are faced with a deadly new bacteria created by a Purist group determined to rid the Earth of all Newcomers. George Francisco's wife & eldest daughter are infected with the bacteria, and as they lay close to death, a threat to the whole world appears. Someone has come