The Nanotech Murders — Lee Gimenez

The year is 2071 and there's a serial killer loose in Atlanta. Lieutenant Jak Decker, a homicide cop, is on the case but is getting nowhere. As the body count mounts, his boss assigns him a partner, the smart and beautiful Detective Cassandra Smith. Decker, a tough, wise-cracking loner, doesn't want a partner, especially when he finds out she's an android.