Penny Lane was a secret CIA facility at Guantanamo Bay Naval Base.
[1][2][3] Penny Lane was used to attempt to convert particular captives into double agents who would be released to penetrate terrorist organizations and inform on them from within.
[1][2][3] According to Adam Goldman and Matt Apuzzo, of the Associated Press, Intelligence officials who insisted on anonymity asserted that the double agent program had successful graduates—individuals who were believed to be trustworthy enough to be released early, and who would then betray terrorists.
In anticipation of the United States Supreme Court's ruling in Rasul v. Bush, which was going to allow access to habeas corpus for individuals held in Guantanamo, Penny Lane, and other CIA black sites, like Camp Strawberry Fields, were shut down.
[1][2][3] Following the release of the Senate Intelligence Committee's report on the CIA's use of torture, some press reports later asserted that Penny Lane remained in operation, after the CIA stopped holding its own captives there, and that it was the site Scott Horton identified as "Camp No", when three captives died under mysterious circumstances, on June 9-10, 2006.