"Newly discovered information about doorman Jose Perdomo suggests he may have been John Lennon's true assassin and Mark David Chapman was merely a patsy who confessed to the crime while under the spell of relentless mind control techniques such as hypnosis, drug abuse, shock treatment, sleep deprivation, and so on. Perdomo was tasked to provide security for Lennon at the rock star's upscale apartment complex, the Dakota, the night of the murder. Records reveal a "Jose Joaquin Sanjenis Perdomo" (aliases: "Joaquin Sanjenis" and "Sam Jenis") was an anti-Castro Cuban exile and member of Brigade 2506 during the Bay of Pigs Invasion in 1961, a failed CIA operation to overthrow Fidel Castro. ... "
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http://www.jfkmontreal.com/john_lennon/Usenet/Perdomo.htm