William Gibson, author of the extraordinary multiaward-winning novel Neuromancer, has written his most brilliant and thrilling work to date . . .The Mona Lisa Overdrive.   Enter Gibson's unique world--lyric and mechanical, sensual and violent, sobering and exciting--where multinational corporations and high tech outlaws vie for power, traveling into the computer-generated universe known as cyberspace.  Into this world comes Mona, a young girl with a murky past and an uncertain future whose life is on a collision course with internationally famous Sense/Net star Angie Mitchell.  Since childhood, Angie has been able to tap into cyberspace without a computer.  Now, from inside cyberspace, a kidnapping plot is masterminded by a phantom entity who has plans for Mona, Angie, and all humanity, plans that cannot be controlled . . . or even known.  And behind the intrigue lurks the shadowy Yazuka, the powerful Japanese underworld, whose leaders ruthlessly manipulate people and events to suit their own purposes . . . or so they think.