Colony is an original novel based on the U.S. television series Buffy the Vampire Slayer. This novel is part of the line of Buffy books called "Stake your Own Destiny". These books give the reader a large series of choices, once a choice is made, the page number to turn to is given. The result is that the reader might decide the fate of the characters. With this novel, there are more than a dozen possible endings. Source: Wikipedia (en)