In this fourth and final book in a 30-year publishing
odyssey (following 2001, 2010, and 2061), 2001 astronaut
Frank Poole, presumed dead and adrift in deep space near Jupiter,
is recovered alive in the year 3001. Intent on saving humanity,
he returns to Jupiter's satellite, Europa, to contact partner
Dave Bowman, whose mind has become absorbed by a third monolith.