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Sirens of Ceres was the fifth episode of K9. It was written by Deborah Parsons, directed by Daniel Nettheim and featured John Leeson as K9 Mark 2, Keegan Joyce as Starkey, Philippa Coulthard as Jorjie Turner, Daniel Webber as Darius Pike and Robert Moloney as Alistair Gryffen.

K9's role was smaller in this episode as it was focused on other characters, in particular Jorjie.


When Jorjie hits one of the robot police with a stone, her mother punishes her by sending her to the private school Magdalene Academy. But the Department are testing an alien mineral weapon, which they can use to control students in the academy.


Vibeka, an activist, is protesting CCPC violence when she is apprehended by two of them. K9, Starkey and Jorjie witness the arrest and Starkey records it to "publicise the violence". Jorjie decides to take action and despite Starkey's warning, she throws a stone at one of the CCPCs. The three run as Inspector Drake arrives and takes Vibeka away. Two CCPCs corner them and a third confiscates Starkey's recording. Drake orders the CCPCs to use an unknown device, the Inhibitor, into which the CCPC puts an alien substance. The device fails, destroying the CCPC and sending K9 flying. Drake is angered at this and crushes the top off his cane.

At Jorjie's house, June is shocked to learn that Jorjie threw a stone at a CCPC. She is even angrier that Jorjie dismisses her concerns by complaining of a headache. Jorjie says the CCPC was using a strange weapon.

Back at the mansion, Gryffen repairs K9, and lectures Starkey on his "tomfoolery." In the Department Mobile HQ, Drake suggests June send Jorjie to Magdalene Academy. Two weeks later. Jorjie arrives at the Academy, where she meets Vibeka, who warns Jorjie not to put on the bracelets worn by several of the students; they change people's behaviour. Jorjie takes her advice and doesn't join Melaina's study group. When she goes to the mansion and complains about the school, Starkey and Gryffen don't agree with her.

Gryffen analyses video playback of the explosion and finds the strange substance vaporises under pressure. K9 says the CCPCs used it to try to take control of him and it is an alien substance. When Jorjie returns to the academy, she finds Vibeka now wears a bracelet. She tells Starkey, who comes to Magdalene to investigate. Vibeka flirts with him.

Gryffen discovers the alien substance is cerulium. K9 describes the planet Ceres, and how lack of free will destroyed its civilisation. At the Academy the girls give Jorjie a bracelet and persuade her to wear it. She falls under its influence almost immediately and returns to the mansion, where she flirts with Darius while K9 identifies the bracelet as cerulium. Starkey tells her to take off the bracelet, but she refuses until K9 destroys it with his laser cannon.

The next day she returns to school with a fake bracelet, asking where she can get another one for her mother, June Turner. Drake realises that his plot is uncovered and the girls attack her, but K9 arrives and destroys all the bracelets. Melaina is the only one remaining. When Drake deactivates her, Jorjie reveals to the other students that she is a robot similar to the CCPC.


Support Cast[]

Robert Moloney, Keegan Joyce, Philippa Coulthard, Daniel Webber and John Leeson are all credited in the opening of the episode and not the closing credits. With the exception of Leeson's credit, they are credited only by their name and not with their respective character's name attached.



  • Upon seeing Jorjie in her academy uniform, Darius comments that she looks "manga".

Story notes[]


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Filming locations[]

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Production errors[]

If you'd like to talk about narrative problems with this story — like plot holes and things that seem to contradict other stories — please go to this episode's discontinuity discussion.
  • On the professor's screen Cerulium is instead written Cerilium.


Home video releases[]

This episode is featured in the following DVD sets:

External links[]