Legion

Stephen Leeds is perfectly sane. It's his hallucinations who are mad.

A genius of unrivaled aptitude, Stephen can learn any new skill, vocation, or art in a matter of hours. However, to contain all of this, his mind creates hallucinatory people - Stephen calls them aspects - to hold and manifest the information. Wherever he goes, he is joined by a team of imaginary experts to give advice, interpretation, and explanation. He uses them to solve problems . . . for a price.

His brain is getting a little crowded and the aspects have a tendency of taking on lives of their own. When a company hires him to recover stolen property - a camera that can allegedly take pictures of the past - Stephen finds himself in an adventure crossing oceans and fighting terrorists. What he discovers may upend the foundation of three major world religions - and, perhaps, give him a vital clue into the true nature of his aspects.