Each book uses 2001 as its starting point. Otherwise, the novels each occur in separate continuities. Book 1 2001: A Space Odyssey On the Moon, an enigma is uncovered. So great are the implications of this discovery that for the first time men are sent out deep into our solar system. But long before their destination is reached, things begin to go horribly, inexplicably wrong... Book 2 2010: Odyssey Two Who or what transformed Dave Bowman into the Star-Child? What purpose lay behind the transformation? What would become of the Star-Child? What alien purpose lay behind the monoliths on the Moon and out in space? What could drive HAL, a stable, intelligent computer, to kill the crew? Was HAL really insane? What happened to HAL and the spaceship Discovery after Dave Bowman disappeared? Book 3 2061: Odyssey Three As two expeditions into space become inextricably tangled. Heywood Floyd, survivor of two previous encounters with the mysterious monloiths, must again confront Dave Bowman, HAL, and an alien race that has decided that Mankind is to play a part in the evolution of the galaxy whether it wishes to or not. Book 4 3001: The Final Odyssey One thousand years after the Jupiter mission to explore the mysterious Monolith had been destroyed, after Dave Bowman was transformed into the Star Child, Frank Poole drifted in space, frozen and forgotten, leaving the supercomputer HAL inoperable. But now Poole has returned to life, awakening in a world far different from the one he left behind--and just as the Monolith may be stirring once again . .