If you fly like a nightbird into the Mekong Delta jungle near Saigon, you will find The Killing School. Required studies: Mind Control, Persuasion Techniques, Pharmaceutical Interventions. Those afraid of the darkness of humanity need not apply.

In a CIA dark ops house of horrors, aka The Killing School, Ghost Soldier Jerry Prince aces every subject as the experimental model for elite future warriors. Programmed for killing efficiency, his stunning physical, emotional, and psychological transformation is the work of a brilliant scientist employed by the world's dirtiest diplomat, Ambassador Phillip Jordan.

But when J.D. Mikel, the CIA's most valuable assassin, goes rogue, and internationally renowned war photographer Isabelle Chen is sucked into an affair where death, love, and The Killing School brutally intertwine, the race against time and the enemy within go far beyond the perils of a long bloody war speeding toward its cataclysmic end.

Because when no one is who you think they are... When you don't even recognize yourself... Even the most innocent players can become part of something-UNSPEAKABLE.

From the bestselling author of Unbreakable: There Will Be Killing and Unknowable: Making A Killing comes the shocking conclusion to the Murder on the Mekong Series of psychological thrillers.

Publisher's Note: Readers should be prepared for death and graphic violence consistent with the true nature of the notorious Pheonix Program and the School of the Americas during the Vietnam war.

Unspeakable: The Killing School is a tightly woven psychological thriller that reflects the real-world experience and knowledge of veteran, author, and psychotherapist John Hart, creator of the Murder on the Mekong series.

Fans of Jonathan Maberry, Thomas Harris, Maximilian Uriarte, Peter Straub, and L.T. Ryan will not want to miss this riveting fiction series.

"A riveting journey into the perils of war and the darkness of the human heart." -Tara Janzen, New York Times Bestselling author of the Steele Street series

Murder on the Mekong Series

Unbreakable

Blindspot

Unknowable

Unspeakable