Cloak of Illusion — John Maddox Roberts

To Mughal, planet of opulence, go Haakon, Rama and the rest of the crew of Eurynome. Caught between the government of Mughal, the planet's underworld, and rebels plotting revolution, Haakon and Rama must seek out the top secret project, Precious Pearl, which supposedly has discovered ways to circumvent the physical laws of the universe. To fail will mean their deaths; to succeed will mean worse for all of humankind.