Book 35 - "2010: Odyssey Two" by Arthur C. Clarke

The story of the Russian-American mission to Jupiter to retrieve the Discovery, find out why HAL went crazy, and study the huge monolith orbiting Io. It's an interesting story, but padded out by too many passages lifted directly from "2001: A Space Odyssey". There is even a passage describing the four largest moons of Jupiter that occurs twice, almost unchanged; first when the Leonov arrives, and again when the Star Child visits the same moons. It just seems a bit lazy to me.