|Darkness of The Heart|
|Air Date||March 13, 2004|
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Darkness of The Heart is the fiftieth episode of Mermaid Melody Pichi Pichi Pitch.
Lucia, Hanon, Rina and Karen storm into Gaito's castle to stop his plans of world domination and rescue two friends Noel and Coco the mermaid princess in the process. Coco begs Sara to return to her old self. Meanwhile, Lucia is forced to challenge her own heart.