Julia Jekyll and Harriet Hyde
Country of originUnited Kingdom
Original languageEnglish
No. of series3
No. of episodes53
Running time14 minutes
Original networkCBBC
Original release1995 (1995) –
1998 (1998)

Julia Jekyll and Harriet Hyde was a British children's television series which aired on BBC One (via Children's BBC and later CBBC) in the UK for 53 episodes between 1995 and 1998.

The programme was a comedy with its premise being loosely based on Robert Louis Stevenson's Gothic 1886 novella, Strange Case of Dr Jekyll and Mr Hyde.


Olivia Hallinan plays an intelligent schoolgirl named Julia Jekyll who makes a special drink called an elixir for a science project, but two school bullies named Nicola and Sharon known as "The Blister Sisters" sabotage her experiment by adding a hair restoring formula to it. When Julia sips the drink during a demonstration, she turns into a huge hairy monster named Harriet Hyde that scares the living daylights out of most of the people around her, even though she is harmless and friendly to most. Julia's parents Jerry and Moira (who has a tendency to repeat herself literally whenever someone says "You can say that again.") are fond of Harriet and believe she is Julia's friend, not knowing that Harriet and Julia were the same person. However their next-door neighbours, Jason and Mona Jitter, a neurotic couple who spent most of their time at a therapist's, were terrified of Harriet and had numerous unfortunate encounters with her. The Blister sisters repeatedly plot to get rid of Harriet but usually end up on the receiving end of her wrath, mostly being flung headfirst across the room.

The effects of Harriet Hyde usually wear off after a while but unexpectedly keep coming back. Julia's best friend and fellow student from Rocket Academy, Edward Knickers is the only one who knows her secret and she has hard work trying to hide it from her parents, next door neighbours, the teachers and all the other fellow students whilst she tries to find a cure. Julia can often recognise when she is about to transform into Harriet and manages to hide away from everyone else (for example by pretending she is going to be sick and having to leave the room). Teachers at the Rocket Academy were the jolly hippie headmaster Memphis Rocket, his doting elderly mother who is a horrendous cook, and Lester Blister, the Blister sisters' cruel and scheming uncle who wishes to take over the school.

Main cast

Actor Role Series
Olivia Hallinan Julia Jekyll 1-3
Harriet Hyde (voice)
John Asquith Harriet Hyde 1-3
Victoria Williams Moira Jekyll (credited as Mum) 1-3
Bill Fellows Jerry Jekyll (credited as Dad) 1-2
Ian Keith 3
Simon Green Memphis Rocket 1-3
Ann Emery Stella Rocket (credited as Mrs Rocket) 1-3
Robert Portal Lester Blister 1
Dale Rapley 2-3
Tiffany Griffiths Nicola Blister 1-3
Karen Salt Sharon Blister 1-3
Christine Lohr Mrs Smith 1-3
Guy Edwards Edward Knickers 1-2
Steven Webb 3
Susie Brann Mona Jitter 2-3
John Elmes Jason Jitter 2-3


Series 1 (1995-1996)

No. in
TitleWritten byOriginal air date
11"Julia's Elixir"Jeremy Swan29 September 1995 (1995-09-29)
After a school experiment goes horribly wrong, Julia finds herself turning into a monstrous creature called Harriet Hyde.
22"A Fright For Aunt Cassandra"Jeremy Swan6 October 1995 (1995-10-06)

Julia's bossy aunt Cassandra comes to visit. Meanwhile, Mr and Mrs Rocket are awaiting the arrival of a school inspector.

Featuring: Lynda Bellingham as Aunt Cassandra[1]
33"Beauty and the Beast"Jeremy Swan13 October 1995 (1995-10-13)
Julia is selected to play the role of Beauty in the Rocket Academy's production of 'Beauty and the Beast'.
44"Horror at the Waxworks"Jeremy Swan20 October 1995 (1995-10-20)
The pupils of the Rocket Academy go on a school trip to a waxwork museum.
55"Emmeline Pond Takes Charge"Jim Eldridge27 October 1995 (1995-10-27)

Emmeline Pond, the new chairperson of the school governors, takes over the Rocket Academy.

Featuring: Anna Kirke as Emmeline Pond[2]
66"A Dragon in the Living Room"Jim Eldridge3 November 1995 (1995-11-03)

A businessman called Tim Tok Lim is interested in Julia's elixir, and is invited to the Jekyll's home for dinner to test it.

Featuring: David Y. Cheung as Tim Tok Lim[3]
77"Not Yeti"Jim Eldridge10 November 1995 (1995-11-10)

A photographer called Sid Snap arrives at the Rocket Academy after a yeti is sighted on the premises.

Featuring: Scott Harvey as Sid Snap[4]
88"The Fingers of Mrs Figgis"Jim Eldridge17 November 1995 (1995-11-17)

The Jekyll's new cleaner, Mrs Figgis, steals valuable items from the family, including Jerry's prized bravery award.

Featuring: Josie Kidd as Mrs Figgis[5]
99"Love Is in the Air"Jeremy Swan24 November 1995 (1995-11-24)

Julia's cousin Daffodil becomes infatuated with Julia's science teacher, Lester Blister. Meanwhile, Mr Rocket must make a choice between his new girlfriend, Amber Python, and his mother.

Featuring: Natasha Grey as Daffodil Jekyll, Natalie Forbes as Amber Python[6]
1010"Sister Blister"Jim Eldridge1 December 1995 (1995-12-01)

Lester Blister enlists the help of his sister in order to determine if Harriet Hyde is a robot.

Featuring: Richenda Carey as Sister Blister[7]
1111"Hard Rocket Café"Jim Eldridge8 December 1995 (1995-12-08)

The Rocket Academy is looking for a new cook after Mrs Rocket nearly poisons Lester Blister.

Featuring: David Sterne as Willy Burnitt[8]
1212"Gorilla in the Midst"Jim Eldridge15 December 1995 (1995-12-15)
A gorilla named Guido escapes from the local zoo and begins terrorising the Rocket Academy.
1313"Gardener's Horror Time"Jim Eldridge22 December 1995 (1995-12-22)
Mr Rocket buys a plant for his mother's birthday, but a mishap with one of Julia's experiments causes it to grow uncontrollably.
1414"Going to the Dogs"Jim Eldridge5 January 1996 (1996-01-05)
Julia believes that she has accidentally turned Mr Rocket into a dog.
1515"The New Boy"Jeremy Swan12 January 1996 (1996-01-12)

A new pupil, Edward Knickers, arrives at the Rocket Academy, and he and Julia quickly strike up a friendship.

First appearance of: Guy Edwards as Edward Knickers
1616"Home Sweet Home"Jim Eldridge19 January 1996 (1996-01-19)
After receiving an abysmal school report, Mr Rocket decides to take the pupils of the Rocket Academy to Julia's house in the hopes that some of her cleverness will rub off on the other pupils.
1717"Big Bunny"Jim Eldridge26 January 1996 (1996-01-26)
Edward's new antidote has the unexpected effect of causing Julia's pet rabbit to grow to an enormous size.
1818"Framed"Jim Eldridge2 February 1996 (1996-02-02)
Julia is expelled from the Rocket Academy after the Blister Sisters frame her for something she did not do.
1919"Stuck on Harriet"Jim Eldridge9 February 1996 (1996-02-09)
Julia becomes stuck as Harriet and has to spend the evening working late at the Rocket Academy.
2020"Aliens"Jim Eldridge16 February 1996 (1996-02-16)
Mr Rocket suspects the Jekyll family of being aliens.
2121"Mrs Rocket's Diamonds"Jim Eldridge23 February 1996 (1996-02-23)
Mrs Rocket inherits a giant diamond, which Mr Blister is very keen to get hold of.
2222"Danger - Ball of Fluff"Jim Eldridge1 March 1996 (1996-03-01)
An experiment gone wrong leads to Julia turning into a small ball of fluff.
2323"Roman All Over"Jim Eldridge8 March 1996 (1996-03-08)
Julia discovers some ancient Roman pottery in the yard of the Rocket Academy.
2424"Mr And Mrs Hyde"Jim Eldridge15 March 1996 (1996-03-15)

The teachers of the Rocket Academy are terrified of meeting Harriet's parents.

Last appearance of: Robert Portal as Lester Blister

Series 2 (1996)

No. in
TitleWritten byOriginal air date
251"Little Mrs Rocket"Jeremy Swan12 September 1996 (1996-09-12)

Mrs Rocket accidentally drinks one of Julia's experiments and shrinks.

First appearance of: Dale Rapley as Lester Blister
262"The Magic Cabinet of Mr Rocket"Jeremy Swan19 September 1996 (1996-09-19)

Mr Rocket becomes interested in magic. Meanwhile, Mona and Jason Jitter move in next door to the Jekylls.

First appearance of: Susie Brann as Mona Jitter, John Elmes as Jason Jitter
273"The New Caretaker"Jeremy Swan26 September 1996 (1996-09-26)

Mrs Rocket's long lost brother, Alf Sparkle, arrives at the Rocket Academy, and is given the job of caretaker.

Featuring: Christopher Biggins as Alf Sparkle[9]
284"Top Kids"Jim Eldridge3 October 1996 (1996-10-03)

Julia is chosen to participate in a radio quiz.

Featuring: Dave Benson Phillips as himself (credited as 'Quiz person' in Radio Times)[10]
295"I-Spy"Jim Eldridge10 October 1996 (1996-10-10)
Mr Rocket hears that the school inspector has placed a spy in the Rocket Academy, and is determined to find out who it is.
306"Young Musician of the Century"Jeremy Swan17 October 1996 (1996-10-17)
Julia takes up playing the piano, and is entered into the 'Young Musician of the Century' competition.
317"The Big Prize"Jim Eldridge24 October 1996 (1996-10-24)
Jason enters his prized marrow in a competition.
328"Granny Jekyll"Jim Eldridge31 October 1996 (1996-10-31)

Julia's grandmother comes to visit.

Featuring: Lila Kaye as Granny Jekyll
339"In The Net"Jim Eldridge7 November 1996 (1996-11-07)

A famous goalkeeper, Benny Blister, is coming to visit the Rocket Academy.

Featuring: Michael Cantwell as Benny Blister[11]
3410"Not All There"Jim Eldridge14 November 1996 (1996-11-14)

Harriet Hyde becomes invisible after Julia's experiment goes wrong.

Featuring: Scott Harvey as Sid Snap
3511"Love's Light Fingers"Jim Eldridge21 November 1996 (1996-11-21)

Mr Rocket becomes engaged to the Jekyll's former kleptomaniac housekeeper, Mrs Figgis.

Featuring: Josie Kidd as Mrs Figgis
3612"The French Connection"Jim Eldridge28 November 1996 (1996-11-28)
The Rocket Academy sets up a foreign exchange with a school in France.
3713"Secrets"Jim Eldridge5 December 1996 (1996-12-05)
Mrs Rocket organises a surprise party for Mr Rocket to celebrate his tenth anniversary of being headteacher of the Rocket Academy.
3814"Famed"Jeremy Swan12 December 1996 (1996-12-12)
The Rocket Academy is selected to appear on television.
3915"A Rocket Christmas"Jim Eldridge19 December 1996 (1996-12-19)

The Christmas party at the Rocket Academy is thrown into jeopardy when Santa Claus cancels his appearance.

Last appearance of: Bill Fellows as Jerry Jekyll, Guy Edwards as Edward Knickers

Series 3 (1998)

No. in
TitleWritten byOriginal air date
401"Invitations To Harriet"Jeremy Swan8 January 1998 (1998-01-08)

Julia and Harriet are invited to come to tea by Mr and Mrs Rocket, Jason and Mona Jitter and her parents.

First appearance of: Ian Keith as Jerry Jekyll, Steven Webb as Edward Knickers
412"Tiddles"Jim Eldridge15 January 1998 (1998-01-15)

The Blister Sisters release a snake into the Rocket Academy, while Mr Rocket brings in a private investigator to find out why food keeps going missing.

Featuring: Scott Harvey as Sid Snap[12]
423"Julia's Birthday"Jeremy Swan22 January 1998 (1998-01-22)
The Rocket Academy try to show their appreciation of Julia on her birthday.
434"Astro-Nuts"Jim Eldridge29 January 1998 (1998-01-29)

Sister Blister is brought into the Rocket Academy in order to test Mr Rocket's suitability to become an astronaut.

Featuring: Richenda Carey as Sister Blister[13]
445"Best Girl"Jeremy Swan5 February 1998 (1998-02-05)
Julia is made Head Girl of the Rocket Academy. A terrified Mr Rocket is worried that Harriet will become jealous, and goes into hiding.
456"I'm Henry VIII I Am"Jim Eldridge12 February 1998 (1998-02-12)

Henry VIII unexpectedly appears at the Rocket Academy.

Featuring: Martyn Ellis as Henry VIII[14]
467"Aggro"Jeremy Swan19 February 1998 (1998-02-19)
Tensions are running high between the Jitters and the Jekylls, as well as between the staff of the Rocket Academy.
478"Dear Aunt Aggie"Jim Eldridge26 February 1998 (1998-02-26)
Julia's mum takes a job at the local newspaper as their new agony aunt.
489"The Duke And Duchess of Rocket"Jeremy Swan5 March 1998 (1998-03-05)
Mr and Mrs Rocket discover they are descended from aristocracy.
4910"With A Smile and a Song"Jim Eldridge12 March 1998 (1998-03-12)

The Rocket Academy are holding a talent contest, and Julia's grandmother is encouraged to enter.

Featuring: Lila Kaye as Granny Jekyll[15]
5011"Half Half Term"Jeremy Swan19 March 1998 (1998-03-19)
Due to budgetary constraints at the Rocket Academy, the teachers have to take part-time jobs during the half term.
5112"Which Witch?"Jim Eldridge26 March 1998 (1998-03-26)
Julia is suspected of being a witch after she is seen flying.
5213"Fangs"Jim Eldridge31 March 1998 (1998-03-31)
Mr Blister takes up a part-time job as a vampire kissogram.
5314"Mrs Rocket and the Mermaid Potion"Jeremy Swan2 April 1998 (1998-04-02)
The Blister Sisters sabotage another of Julia's experiments, leading to unintended consequences for Mrs Rocket.


  1. ^ "Radio Times" (3741). 28 September 1995: 120. ((cite journal)): Cite journal requires |journal= (help)
  2. ^ "Radio Times" (3744). 19 October 1995: 114. ((cite journal)): Cite journal requires |journal= (help)
  3. ^ "Radio Times" (3745). 26 October 1995: 112. ((cite journal)): Cite journal requires |journal= (help)
  4. ^ "Radio Times" (3746). 2 November 1995: 116. ((cite journal)): Cite journal requires |journal= (help)
  5. ^ "Radio Times" (3747). 9 November 1995: 110. ((cite journal)): Cite journal requires |journal= (help)
  6. ^ "Radio Times" (3748). 16 November 1995: 116. ((cite journal)): Cite journal requires |journal= (help)
  7. ^ "Radio Times" (3749). 23 November 1995: 110. ((cite journal)): Cite journal requires |journal= (help)
  8. ^ "Radio Times" (3750). 30 November 1995: 118. ((cite journal)): Cite journal requires |journal= (help)
  9. ^ "Radio Times" (3791). 19 September 1996: 106. ((cite journal)): Cite journal requires |journal= (help)
  10. ^ "Radio Times" (3792). 26 September 1996: 98. ((cite journal)): Cite journal requires |journal= (help)
  11. ^ "Radio Times" (3797). 31 October 1996: 106. ((cite journal)): Cite journal requires |journal= (help)
  12. ^ "Radio Times" (3857). 8 January 1998: 100. ((cite journal)): Cite journal requires |journal= (help)
  13. ^ "Radio Times" (3859). 22 January 1998: 106. ((cite journal)): Cite journal requires |journal= (help)
  14. ^ "Radio Times" (3861). 5 February 1998: 98. ((cite journal)): Cite journal requires |journal= (help)
  15. ^ "Radio Times" (3865). 5 March 1998: 104. ((cite journal)): Cite journal requires |journal= (help)