From true weird fiction visionary Jeff Noon comes the fourth book in this Philip K. Dick Award-nominated mystery series. In the year 1960, private eye John Nyquist arrives in Delirium, a city of a million borders, to pursue his strangest case yet: tracking down the stolen sentient image of faded rock'n'roll star Vince Craven. As Nyquist tracks Vince's image through Delirium, crossing a series of ever-stranger and more surreal borderzones, he hears tantalising stories of a First Border, Omata, hidden within the depths of the city. But to find it, he'll have to cross into the fractured minds of Delirium's residents, and even into his own...