The guest star for the first episode was Tim Conway. Arguably one of the funniest men ever, after McHALE'S NAVY, TV just didn't seem to know what to do with him. Conway has alleged for years that TURN ON was canceled even before the first episode was over.
With no one anticipating such a sudden failure, several other episodes had been shot. Seen here is the TV GUIDE ad for the second, never aired episode which featured I SPY's Robert Culp and his wife France Nuyen. A later episode would have presented one of the last TV appearances --had it actually appeared--of The Monkees--Mike, Davy and Micky, Peter having already defected.
The Paley Center in New York City supposedly actually has two episodes available for viewing on-site, including the Conway one, but the series--in spite of the fact that its once edgy jokes seem terribly tame as reported on Wikipedia--has never been spotted on television again.