The Gracie Code, Part One


Air Date:
1 February 2008
Directed by:
Colin Budds
Written by:
Max Dann
Preceded By:
Followed By:

The Gracie Code, Part One is 19th episode in Season 2 of H2O: Just Add Water.


While looking research trying to uncover the secrets of the moon pool, Lewis uncovers the work of Max Hamilton, who fifty years earlier found himself in much the same role that Lewis is in now. Max realizes Cleo is one of the mermaids when he spots her locket - the very same one he made for Gracie, one of the original mermaids, fifty years ago. Lewis takes him the locket to get it fixed and Max reveals that he knows what Cleo is. Max tells Cleo and Lewis he created the lockets, loved Gracie, tried to discover Mako's secrets and being dumped by Gracie. When Cleo is out of earshot, Max tells Lewis that Cleo and Lewis should never have broken up because he "knows when people should be together". Lewis discovers a powerful ally in Max, who helps him continue on with his research. Charlotte is upset because Lewis now is avoiding her.


  • Emma is absent for this part 1, but appears in part 2, making Emma the first main character to be absent from the series, the second being Lewis. Emma does appear for a few seconds but only in a flashback to her finding the locket at the bottom of the Moon Pool. This was footage from "Party Girls".
  • This episode marks Elliot Gilbert (Trent Sullivan) last appearance.


  • In a flashback where Emma found Gracie's medallion, the stone was red, but it is supposed to be blue.




H2O - just add water S2 E19 - The Gracie Code, Part One (full episode)

H2O - just add water S2 E19 - The Gracie Code, Part One (full episode)