There are 4 books in the Queen of Angels Series series. The newest book is Slant which came out in 1997.

1
Queen of Angels

Book cover of Queen of Angels
Hugo Award Finalist: A near-future novel of artificial intelligence, human nature, and mass murder that "succeeds on virtually every level" (The New York Times Book Review).

In Los Angeles in 2047, advances in the science of psychology have made crime a rare occurrence. So it's utterly shocking when eight bodies…
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2
Heads

Heads
Mickey awaits imminent chaos when his brother-in-law uses the moon's facilities in his quest for Absolute Zero and his sister Rho tries to read the memories of 410 cryogenically frozen heads

4
Slant

Slant
Miraculous microscopic machines of nanotechnology have built an America in which art flourishes and disease and hunger are unknown, but with these machines some people are finding their minds are frightening places indeed. 30,000 first printing.