Mosaic — John R. Maxim

The U.S. Government has sanctioned two top-secret scientific experiments overseen by a shadowy figure known for his brutal efficiency. The aim of these twin covert operations is dark, sinister, and potentially devastating: to use Multiple Personality Disorder to create the perfect assassin.
Under orders from a troubled and secretive superior officer, Major Roger Grayson has launched an investigation into the goings-on behind the electrified gates of the Belfair mental health research facility. An operative with the uncanny ability to adapt to virtually any undercover situation, Grayson fears what this assignment will reveal about the nature and humanity of these projects...and about himself. And when his inquest brings an extraordinary woman into his life--an innocent civilian targeted by the government-- the stakes become much higher, as the scope of the secret project becomes more apparent...and more horrifying.