The Case Angel

The book is a thriller type novel about a strange case that happened after the arrest of an illegal imigrant that enters some sort of trance when hard depressed and soon he is transfered to the FBI under drug dealing suspicion. Nothing compromising can be found about him but the possessing entity during these trances reveals very compromising information, compromising enough to cause great disturbance in USA if goes public and enough to get the US president aware of it, and worried. The government then hires a famous specialist to deal with this and the outcome is a terrible, inimaginable truth.