Was it Mariette Hartley? I know she did Trek and MI.
I have all SIX episodes of beyond Westorld on DVD, it was a late 70's attempt to try and cash in on Westworld, no not horrid, but not classic either. Rene Auberjonois (Odo) is a guest star, a wild haired rocker named Power!
"High Priestesses Of Zardoz" By Eliza's Starbase Of Avatars Copyright 2009."
"Zardoz Speaks To You, His Choosen Trek Fans."