Plastic surgeon Dr. Maria Martinez, finds herself in Goldmouth Prison, convicted of killing a priest. Maria has Asperger’s Syndrome, a very high IQ, an uncanny talent for remembering facts and dates, an incredible ability to decipher codes and connect patterns, and possesses a photographic memory. She finds herself alone and seemingly friendless in an English prison, far away from her home and family in Salamanca, Spain.

DNA evidence places Maria at the scene of the crime, yet she claims she is innocent. Then she begins to remember…A strange room. Strange people. Being watched. She has no memory of committing murder. Increasingly, Maria puts the evidence together that she is at the center of a conspiracy, involving MI5, called Project Callidus. It dawns on her that those she considered her closest friends and allies have been acting as her “handlers”, on behalf of The Project. Accused of being paranoid and delusional, Maria wonders who in prison she can trust and which warnings she should heed. She struggles to understand what Project Callidus is and the role she plays in this scheme, before it is too late.