Scooby-Doo! Mystery Incorporated Season 1 Episode 20: The Siren's Song
Feeling left out of the group, Velma goes solo to investigate attacks by amphibious "Fish Freaks" in the area around an abandoned oil rig, only to find a friend of her own... in the form of a mermaid!
Aired 2011-06-14 · 23 min
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