Thursday 13th February 1986 saw legendary Rat Packer Sammy Davis Jr. arrive (via Network Ten's "Eyewitness News" helicopter) at the Nunawading studios to visit the show's set and gallery. Meeting the cast he declared his adoration for Joan Ferguson, much to Maggie Kirkpatrick's amusement. A fan of the show, he expressed a desire to make a guest appearance, preferably opposite The Freak - unfortunately for the entertainer no suitable shooting dates proved viable, and the drama was soon in the processes of winding down.

In 2013 when Wentworth (2013) launched (Prisoner's re-imagining), it did so with members of the Prisoner cast, including Val Lehman, Elspeth Ballantyne, Carol Burns, Fiona Spence and Patsy King. With Fiona Spence calling Wentworth 'the ultimate compliment'

After episode 692 was shown in Sweden in early 2000, fans demonstrated outside the building of TV 4 (which had shown the series), demanding a rerun. It was the first time in Sweden this had happened, and the demonstration convinced the company to air the show again.

The oft-mentioned Department, the staff's employers, was originally the Department of Social Welfare, renamed as the Department of Corrective Services as the series progressed.

Late actress Sheila Florance admitted she left the series so she could take care of her then husband who was extremely ill at the time, having been married to him for over 30 years. She explained that playing Lizzie Birdsworth had taken a toll on her and her story had been told.