The Crystal Series science fiction action adventure books by Doug J. Cooper

Our best weapon is the super AI they've come to steal. The Crystal Series is four full-length books of action and suspense where the emergence of self-aware AI and alien first contact occur at the same time. The Characters Criss is a four-gen AI with the cognitive ability of a thousand humans. Hard-wired to protect and support his human leadership, Criss serves Juice Tallette, the crystal scientist who created him; Cheryl Wallace, captain of the Fleet space cruiser Alliance; and Sid, a covert spy for the Defense Intelligence Agency. The Books Crystal Deception (Book 1) goes full throttle when alien aggressors--determined to take Criss for themselves by any means necessary--present a mortal threat to Earth.