Between 1953 and 1973, the Central Intelligence Agency conducted one of the most extensive and ethically compromised research programs in American history. Operating under the codename MKUltra, the program funded experiments on unwitting subjects across universities, hospitals, and prisons—administering LSD, inducing psychological stress, and testing behavioral manipulation techniques on people who never consented and often never knew what had been done to them. This book reconstructs MKUltra through declassified documents, congressional testimony, survivor accounts, and investigative journalism—examining not only what the CIA did, but how it built the institutional architecture to do it without oversight. It traces the Cold War anxieties that made such a program politically imaginable, the academic and medical establishments that collaborated, and the legal mechanisms that shielded perpetrators from accountability for decades. Rather than treating MKUltra as an aberration, the narrative situates it within a broader pattern of covert state power—examining how democratic governments justify harm to citizens in the name of national security, and how institutional secrecy makes accountability structurally difficult even after exposure. A rigorous, document-grounded account of state overreach, the limits of informed consent, and the long struggle to hold intelligence agencies answerable to the public they claim to protect.