While Gunn and Salvo try to learn more about their ancient enemy, things are going from bad to worse. Even as they find themselves on a strange world with its own set of rules and competing factions, back on Illium Eldridge is fighting to save the population from the menace that Gray has brought. As time runs out, the chances of success for either group dwindles. Meanwhile an entirely new menace is gathering force. Can anyone survive what is coming? Calypso End is the latest episode in the Gunn and Salvo sci-fi thriller series, a high-octane rush through the wildest corners of the galaxy!