Cassandra Lehman made an uncredited appearance in a flashback sequence as Bea Smith's daughter, Debbie. Cassandra is the real-life daughter of Val Lehman, who played Bea Smith. Her other daughter Joanne Lehman appeared as Yvonne, a cocky youth Bea encounters on the run.
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 theme song "On the Inside" at the time was acclaimed as "the biggest selling single from a female artist in the history of the Australian recording industry". On 6th May 1989 the single was released in the UK and peaked at number 3 in the charts on 3rd June.
The show also spawned stage productions including 1981's revue "Prisoner in Concert" (taped at HM Prison Pentridge); a 1989 UK-based stage drama which starred Patsy King, Elspeth Ballantyne and Glenda Linscott; a 1989 UK-based stage drama which starred Fiona Spence, Jane Clifton and Jacqui Gordon; and 1995 & 1997 UK-based stage musicals which starred Paul O'Grady as Lily Savage and Maggie Kirkpatrick.
In 1981, following all this success, the Ten Network commissioned Grundys to produce Punishment (1981) - a male version of the show. But the series was panned by the critics despite featuring Mel Gibson as an inmate and survived a mere 39 episodes before being cancelled.
During the shooting of a scene where Carol Burns (Franky Doyle) smashes up the recreation room set when Franky flies into a rage, one of the extras started to panic and eventually had to be coaxed out from under a chair.
One of the best satires of the show featured in Let the Blood Run Free (1990), where at one point Nurse Pam Sandwich and Matron Dorothy Conniving-Bitch were sentenced to Wentworth Detention Centre. Costumes and possibly some set elements were reused from the original series, as was an establishing shot of WDC. Perhaps unintentionally the obviously-painted 'shoe shop' flat which appeared behind the doors of the first Driscoll House in Prisoner: Cell Block H (1979) also showed up in the comedy spoof.
A 1984 storyline featuring Vivean Gray as Edna Pearson, a (possible) poisoner, was heavily cut in both Australian and overseas airings following its initial transmission. This was because Grundy was threatened with legal action by Emily Perry, an Australian woman who had been similarly - and recently - imprisoned in reality. The storyline was finally broadcast uncut in Malta in March 2000. It was released (almost) uncut on DVD in the United Kingdom in 2010, as a "stand alone" release besides the ongoing release of chronological episodes.
In an interview Maggie Kirkpatrick admitted that when she started the show she had very little experience in front of the camera and was unsure of what she should do when her character did not have lines in a scene. She ended up doing what she had done in theatre, which was to stand still, so that she did not steal focus from the other actors on stage. Viewers felt her characters stillness was creepy and added to her reputation as "The Freak".
In later seasons, when Kirkpatrick was more comfortable with acting onscreen, she said she got told off by directors if she did too much in a scene, as it undermined her creepiness
The character of Bev "The Beast" Baker (played by Maggie Dence) was originally created as a long-term addition to the cast. However, the writers soon realized that the character of Bev, a serial killer, was too disturbing for the program and wrote her out after only six episodes.
Janet Andrewartha originally auditioned for the role of Bobbie Mitchell before being offered the part of Reb Kean. Janet had to agree to cut her waist-length hair to a "'James Dean'" style for the character.
Wentworth was a high-security prison. Other jails seen in the series were Barnhurst (aka "The Farm", a low-security country prison farm), Woodridge (a mens' prison) and Blackmoor ("The Black Hole", a maximum-security institution for serious offenders). Real-life prisons Pentridge and Fairlea were occasionally alluded to.
In March 2012 Foxtel announced plans to revive the show as Wentworth Prison (2013), focusing on Bea Smith's rise to become Top Dog. This new negotiation with rights owners FremantleMedia followed similar proposals by Ten in 2010 (a broad reworking provisionally entitled "Inside Out") and the 1990s.
Thursday 13th February 1986 saw legendary US entertainer Sammy Davis Jr. arrive (via Network Ten's "Eyewitness News" helicopter) at the Nunawading studios to visit the show's set and gallery, where he met the cast and declared his adoration for the character of Joan Ferguson, much to actress Maggie Kirkpatrick's amusement. He was a fan of the show from LA screenings, and expressed a desire to make a guest appearance, preferably opposite The Freak - unfortunately for the star no suitable shooting dates proved viable, and the drama was soon in the processes of winding down.
Late 1981 (episode 244) saw the inmates issued with new uniforms. These were manufactured by local Victorian firms Ecole-Wagner and Johnson Pty. Ltd., from denim supplied by Yarraville Textiles Pty. Ltd. and with shirts by Roxy.
The trivia items below may give away important plot points.
Maggie Kirkpatrick intended to leave the show in the 9th season, so a storyline was planned where she would go to jail (and it being the 8th season cliffhanger) and be killed in the 9th season setting up a "Whodunnit?" storyline. The show was canceled at the end of the 8th season, so the intended cliffhanger was instead changed to the show's resolving.