In 1956, Velma Orlikow checked herself into a renowned Canadian psychiatric hospital, the Allan Memorial Institute in Montreal. Instead of improving, her condition deteriorated - and her personality underwent jarring changes. More than two decades passed before ... her family had an explanation, and it was much stranger than any of them could imagine: in 1977 it emerged that the CIA had been funding experiments in mind-control brainwashing at the institute as part of a North America-wide project known as MK Ultra. Orlikow was one of several hundred patients who became unwitting subjects of these experiments in Montreal in the late 1950s and early 60s. It's almost impossible to believe," said her granddaughter, Sarah Anne Johnson. "Some of the things [psychiatrist Ewen Cameron] did to his patients are so horrible and unbelievable that it sounds like the stuff of nightmares." Patients were subjected to high-voltage electroshock therapy several times a day, forced into drug-induced sleeps that could last months and injected with megadoses of LSD. After reducing them to a childlike state ... Cameron would attempt to reprogram them by bombarding them with recorded messages for up to 16 hours at a time. Years later, Johnson found out that the experiments had wreaked havoc on Orlikow's brain; it could take her three weeks to read a newspaper, months to write a letter, and years to read a book. Similar scenes played out across Canada as former patients of the institute attempted to return to their lives. "It tainted our whole family," said Alison Steel, whose mother was admitted to the institute in 1957.