NASA's Goddard Space Flight Center is designing a probe which will be dropped into the Kraken Mare, one of the methane seas of Titan. There, it will embark on a journey of exploration. As the probe is being tested at Goddard, things go awry, and an explosion kills seven scientists. The AI program in the probe, a powerful, self-modifying AI called 'Dorothy, ' flees into the Internet"--Provided by publisher.