2015’s State Machine is the third book in the Rachel Peng series . The protagonist, Peng, is among the survivors of an ill-conceived experiment in neural prosthesis. Having struggled back to sanity, the surviving cyborgs have banded together under the banner of the Office of Adaptive and Complementary Enhancement Technologies for mutual support and protection. They offer their services to the government in an attempt to convince society in general  that the cyborgs are more useful than dangerous.
Rachel Peng’s personal contribution to the cause is serving as OACET’s liaison to the Washington D.C. Metropolitan Police. She uses her unique array of senses to crack baffling cases. Her latest case, a murder, is notable because it took place in a heavily secured section of the White House and because the only apparent motive for the murder is theft. But theft of what?