When does Nanny and the Professor return?

The series starred Juliet Mills as Nanny Phoebe Figalilly, Richard Long as Professor Harold Everett, and Elsa Lanchester in the recurring role of Aunt Henrietta. Following the show's cancellation, two animated adaptations of the series aired as part of The ABC Saturday Superstar Movie.
The series starred Juliet Mills as Nanny Phoebe Figalilly, Richard Long as Professor Harold Everett, and Elsa Lanchester in the recurring role of Aunt Henrietta. Nanny is apparently psychic, and has regular flashes of what is often more than intuition.