Two murders have occurred on One One One, an artificial ecosystem createdby the universe's dominant AIs to house several engineered species,including a violent, sentient race of sloth-like creatures. Under orderfrom the Diplomatic Corps, Counselor Andrea Cort has come to this cylinderworld where an indentured human community hangs suspended high above apoisoned, acid atmosphere. Her assignment is to choose a suitable homicidesuspect from among those who have sold their futures to escape existenceseven worse than this one. And no matter where the trail leads her she mustdo nothing to implicate the hosts, who hold the power to obliteratehumankind in an instant. But Andrea Cort is not about to hold back inher hunt for a killer. For she has nothing to lose and harbors no love forher masters or fellow indentures. And she herself has felt the terribleexhilaration of taking life . . . .