Semi-autobiographical story of Conrad Rooks, who travels to France to undergo a drug-withdrawal cure. Flashbacks to the beginings of psychedelia in San Fran. Though initially confusing, as Rooks blends drug-illusion with reality, and cuts color with black-and-white and monochrome tinted shots, "Chappaqua" is conventionally constructed with a beginning, middle, and end.
| Actor | Role |
|---|---|
 Jean-Louis BarraultDr. Benoit | Dr. Benoit |
 Conrad RooksRussel Harwick | Russel Harwick |
 William S. BurroughsOpium Jones | Opium Jones |
 Allen GinsbergMessiah | Messiah |
 Paula PritchettWater Woman | Water Woman |
 Ravi ShankarSun God | Sun God |
 Ornette ColemanPeyote eater | Peyote eater |
 Swami SatchidanandaThe guru | The guru |
| MMoondogThe prophet | The prophet |
 Penny BrownNot listed | Not listed |
 Ed SandersThe Fugs | The Fugs |
| MMoustiqueNot listed | Not listed |
| SSophie StelbounNot listed | Not listed |
 Peter OrlovskyNot listed | Not listed |
| FFrance CrémieuxNot listed | Not listed |
 Rita RenoirNot listed | Not listed |
 Tuli KupferbergSelf - The Fugs (uncredited) | Self - The Fugs (uncredited) |
 Hervé VillechaizeLittle Person (uncredited) | Little Person (uncredited) |
 Jasper RedhatRitualist (uncredited) | Ritualist (uncredited) |
 Jill LatorSacrified One | Sacrified One |