Imagine alien AI Observers have infiltrated Earth to evaluate humanity. Imagine the Observers are more human than we are. Mark Ai goes to work every day as a PC repairman, but fixing computers is just a cover job. Along with his mission managing the observation team, he's attempting to fill in as a parent for a teenage neighbor, provide a good home for a dog, and pick up a little money on the side. It's a juggling act that understandably leads to breaking a few rules, but things really start spinning out of control when competing aliens arrive.

Sequel to Turing Test - Read that book first. Imagine a world populated by human refugees removed from Earth. Now imagine they're producing handicrafts for the galactic luxury market. Mark Ai and his expanded team are deep undercover on Reservation, a world the Ferrymen populated with humans transported from Earth between the Bronze Age and early Iron Age. The mission is to discover if the Ferrymen are violating the Sky God rules of the League of Sentient Aliens Regulating Space, but it soon becomes clear that everything is not what it seems, and the observers are themselves under observation.

Book Three of AI Diaries - Start series with Turing Test. Imagine AI can learn to do magic. Now imagine the greatest magic trick of all. Mark Ai and his team remain on Reservation to rebuild their fortunes, but the future holds more surprises for Library's favorite Observer than he can possibly expect.