When does Charlie's Angels return?

Charlie's Angels is an American crime drama television series that aired on ABC from September 22, 1976, to June 24, 1981. The series was created by Ivan Goff and Ben Roberts and was produced by Aaron Spelling. Kate Jackson, Farrah Fawcett, Jaclyn Smith, Cheryl Ladd, Shelley Hack and Tanya Roberts were all cast. John Forsythe played the unseen Charlie Townsend, who directed the crime-fighting operations of the "Angels" over a speakerphone.
In the initial concept, Sabrina Duncan, Jill Munroe, and Kelly Garrett have graduated from the police academy in Los Angeles, California. Despite proving their capability during training, all three have subsequently been assigned to be a meter maid, office worker, and crossing guard. Dissatisfied with these jobs, they are recruited to work for the Charles Townsend Agency as private investigators. Their boss, Charlie Townsend, who nicknames them "Angels", is never viewed full face, but is often seen from the back.