|The Underworld Bridge|
|Original broadcast||May 8, 2009|
|Series||The Secret Saturdays|
|Overall episode number||14|
|Written by||Laura McCreary|
|Directed by||Scott Jeralds|
|Previous episode||Cryptid vs. Cryptid|
|Next episode||Ghost in the Machine|
The Saturday family and King Ulraj travel to New Guinea to investigate the Duah, a pterosaur cryptid with a bad attitude. However, the Saturdays soon discover that the creature was behaving like that to attract a mate, who he has found in Zon. Zak tries desperately to separate the couple in fear he will never see Zon again if she chooses to go with the cryptid. When the family and Ulraj learn of the Duah's plot to take his new bride to the underworld and eat her alive, they try even harder to bring Zon back to the airship. When the island starts to sink, Ulraj tells Zak that his cryptid powers only work if the creature truly wants to do what is asked of it. Zak manages to break Zon out of her crush and send the Duah back to the underworld.
- New Guinea
- This marks the 4th time that Zak has saved Zon's life.