For a quarter of a century, [Eric Olson] has believed that the Central Intelligence Agency murdered his father, a United States government scientist. On Nov. 28, 1953, around 2 a.m. [the] night manager at the Statler Hotel ... in New York rushed out the front door ... to find a middle-aged man lying on the sidewalk. The man had fallen from the 10th floor -- apparently after crashing through a closed window. [In late July, 1975] the C.I.A.'s director, William Colby [provided Olson's] family ... declassified documents relating to Frank Olson's death. Olson had not been a civilian employee of the Department of the Army. He had been a C.I.A. employee working at Fort Detrick. Olson's specialty, it turned out, had been the development of aerosols for the delivery of anthrax. The Colby documents were ... full of unexplained terms like the ''Artichoke'' and ''Bluebird'' projects. These turned out to be the precursors of what became known as MK-ULTRA, a C.I.A. project, beginning in the Korean War, to explore the use of drugs like LSD as truth serums, as well as botulism and anthrax, for use in covert assassination. The documents claimed that during a meeting between the C.I.A. and Fort Detrick scientists ... on Nov. 19,1953, Sidney Gottlieb of the C.I.A. slipped LSD into Olson's glass of Cointreau. Olson, a scientist by training, would have known that he was working for a government that had put Nazi scientists on trial at Nuremberg for immoral experiments on human beings. Now, in the late summer of 1953, [Olson] faced up to the possibility that his own government was doing the same thing. Slipping LSD into Olson's Cointreau was ... designed to get him to talk ... to assess what kind of risk he posed and then eliminate him if necessary.