Vietnam  scenario over the drug theory, several facts support CBS version. First,  they had already broadcast two episodes of entertainment series that were  clearly against U.S.  involvement in southeast Asia ("Route 66", March 22,  1963; "Twilight Zone", Sept.  27, 1963). Secondly, the drugs in "Harmony" are  quite different from those used in other "Prisoner" episodes. On most  occasions, they have no more in common with recreational "junk" than truth  serum as seen in more realistic spy dramas, while the plan here was to take  our hero and "fill him with hallucinotory drugs....dis