|Something in the Water|
|Original broadcast||May 22, 2009|
|Series||The Secret Saturdays|
|Overall episode number||16|
|Written by||Andrew R. Robinson|
|Directed by||Scott Jeralds|
|Previous episode||Ghost in the Machine|
|Next episode||Target: Fiskerton|
The Saturdays find a hidden city after relocating an elephant-like cryptid called a Grootslang. The city, called Sanctuary II, is a self-sustaining city where modern comforts are provided with no environmental consequences. The city is soon attacked by two catfish-like cryptids called Lau. Doc offers to help relocate the fish without charge, but the inhabitants instead opt to hire Doyle to capture them. Doyle, along with Zak and Fiskerton (who sneak out to join him), is able to capture the Lau. Back on the island, Doc and Drew find that the two Lau attacked because the inhabitants have caged their mother and are using her ability to produce electricity to power the city. Doyle, Zak, and Fisk soon arrive and Doyle collects his money and leaves. A fight soon erupts between the Saturdays and the inhabitants of Sanctuary II. Doyle returns and helps Zak release the two Lau and their mother, who then destroys the city. Doc asks Doyle if he'll come back but Doyle refuses saying he likes running his own show. Before he leaves, he also says he'll get Zak and Fisk something with their cut of the bounty on the Lau—a motorcycle, to which Drew disapproves. Doyle then asks Zak what size jetpack he wears before flying off.
- Doc Saturday
- Drew Saturday
- Zak Saturday
- Doyle Blackwell
- Fiskerton Saturday
- Komodo Saturday
- Zon Saturday
- Sanctuary II
- Doyle mentions that Doc inherited his wealth from his family fortune.
- It is revealed that Doyle left half-eaten nachos on the Saturdays' carpets.