You've Got Murder

Zack is a workaholic computer expert who created his friend Turing. Turing is a sentient artificial-intelligence personality who has thousands of mystery novels downloaded to her database. With a self-improvement feature, Turing and Zack have taken on numerous challenges together. But when Zack disappears, Turing suspects foul play. She'll have to utilize her personality, her knowledge, and her unique abilities in order to find out what happened to her creator--and her friend.