Third broadcast episode of The Prisoner, where Number Two induces dreams on Number Six

Reference

A. B. and C. - Wikipedia, the free encyclopedia
"'A. B. and C.' is the title of the third episode of the British science fiction-allegorical series, The Prisoner. It originally aired in the UK on ITV on 13 October 1967 and was first broadcast in the United States on CBS on 22 June 1968. ..."