Fiona Street

Fiona Street is a black ops operative for the National Security Agency, or at least she was until they temporarily transfered her to a new investigative arm of the Special Prosecutor's office. There, Fiona is a confused fish-out-of-water, a mission-oriented soldier thrust into the quagmire of politics. Then the other shoe drops. The special prosecutor wants her to undergo a surgical procedure that would meld her mind to that of an alley cat. Fiona's skills combined with the predatory perspective of the cat would make this already expert operative the most capable and efficient spy on Earth. All it takes is a little experimental brain surgery...

Fiona Street, from the author of Last Days and Times and Conqueror's Realm. The singularity is here, and it ain't pretty.