H2O: Just Add Water (2006–2010)

In Too Deep 

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When Rikki spies a locket with an uncanny resemblance to Miss Chatham's in a jewelry shop, Zane doesn't understand her desperate desire to possess it.


Jeffrey Walker


Simon Butters, Jonathan M. Shiff (creator)



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Episode cast overview:
Cariba Heine ... Rikki
Claire Holt ... Emma
Phoebe Tonkin ... Cleo
Angus McLaren ... Lewis
Burgess Abernethy ... Zane
Annabelle Stephenson ... Miriam
Alice Hunter ... Tiffany
Jamie Timony Jamie Timony ... Nate
Ariu Lang Sio Ariu Lang Sio ... Wilfred
Teri Haddy Teri Haddy ... Young Miss Chatham
Stu Cochrane Stu Cochrane ... Jeweller
Amrita Tarr Amrita Tarr ... Julia
Ashleigh Brewer ... Gracie
Brett Sellwood Brett Sellwood ... Karl
Christine Amor Christine Amor ... Miss Chatham


Rikki and Zane see a locket in a shop window that looks just like the one Cleo found by Mako Island. Miss Chatham tells the girls how her and her friends, Julia and Gracie, were mermaids when they were 15. Miriam buys the locket to spite Rikki. Written by grrlpunk

Plot Summary | Plot Synopsis


Drama | Family | Fantasy


TV-G | See all certifications »


Release Date:

8 December 2006 (Australia) See more »

Company Credits

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Technical Specs


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Did You Know?


Rikki Chadwick: She was Miss Chatham's friend, and now she's gone. This locket means a lot to her. Any donations will be gratefully accepted.
[holds out her hand]
Lewis McCartney: [takes out wallet] Well, Rikki, I really don't have much money, and what I do have, I was planning on spending on someone special. Lunch,
Lewis McCartney: maybe...?
[she snatches his cash]
Lewis McCartney: Hey... No...
Rikki Chadwick: Thank you.
Rikki Chadwick: Great. This nearly gets us the deposit. And then we only need two hundred dollars after that. Any ideas?
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No Ordinary Girl
(main title theme)
Performed by Ellie Henderson
Written by Shelley Rosenberg
(Season 1)
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