1The Kur Stone (1)
V.V. Argost, host of the popular TV show, Weird World, is after the legendary Kur Stone, which is capable of unleashing the powerful ancient Sumerian cryptid, Kur. With it, V.V. Argost plans to rule the world, so it's up Doc, Drew and Zak Saturday to stop him.
2The Kur Stone (2)
With two of three Kur Stone pieces now in V.V. Argost's possession, the Saturday family races to the location of the final stone piece, Manaus, Brazil before Argost can get to it.
3The Vengeance of Hibagon
The Saturdays discover a "Bigfoot" like creature in Japan who wants revenge on his creator.
4The Ice Caverns of Ellef Ringnes
After disturbing an Inuit chamber, the Secret Scientists accidentally create a giant snowstorm. Along with this snowstorm comes a creature known as an Amarok.
5Guess Who's Going to Be Dinner?
When Zak finds out that a cryptid hunter plans on attacking their headquarters, he comes up with a plan to save the day without ruining Doc and Drew's anniversary.
6The King of Kumari Kandam
V.V. Argost becomes the new king of an ancient, sunken city that has been resurfaced.
7Van Rook's Apprentice
When Drew spots Van Rook's new apprentice Doyle without his mask on, she wonders if he is really her long-lost brother.
8Twelve Hundred Degrees Fahrenheit
When a volcano erupts, a lizard-man known as the Cherufe is released.
9The Owlman Feeds at Midnight
When the Saturdays travel to Southern England for information on the Kur Stone, they end up getting involved with a string of disappearances caused by the Owlman.
10The Swarm at the Edge of Space
After the Saturdays rescue Agents Epsilon and Francis, space jellyfish attack.
- 11
Black Monday
When water supplies in the Middle East are inexplicably turning into salt, the Secret Scientists send Drew and Zak to investigate.
- 12
Eterno
When Zak touches the mystic Smoke Mirror of Tezcatlipoca, it unleashes the Monday family, evil doppelgangers of his family with their own unique powers
- 13
Cryptid vs. Cryptid
The Saturdays discover the existence of underground cryptid fights run by Leonidas Van Rook. They soon discover that Van Rook isn't in on this on his own.
- 14
The Underworld Bride
As part of Zak's training in his cryptid-influencing power, the Saturdays travel to New Guinea with Ulraj (the young king of Kumari Kandam) to investigate a dinosaur/bat creature called the Duah.
- 15
Ghost in the Machine
When Doc receives a troubling "visit" from what appears to be the ghost of his old mentor, the Saturdays travel to Louisiana's Honey Island Swamp to let Doc finish the work he and his mentor started over 25 years ago.
- 16
Something in the Water
The Saturdays stumble across a hidden city built in the middle of an African lake, but this paradise in being threatened by repeated attacks from the giant, catfish-like Lau.
- 17
Target: Fiskerton
Argost recruits Van Rook and Piecemeal to kidnap Fiskerton, whom Argost suspects may be Kur.
- 18
Once More the Nightmare Factory
To rescue their kidnapped family member, the Saturdays and Doyle are forced to assault Weirdworld itself.
- 19
Curse of the Stolen Tiger
The Saturdays, Doyle and the Bedouin girl, Wadi, come across a small Chinese mountain village that's been blighted since the theft of its protector.
- 20
The Kur Guardian
Zak and Doyle, the only Saturdays who know about Fisk's heritage, try to help the big gorilla-cat uncover the secrets of his Lemurian ancestry.
- 21
Food of the Giants
A logging camp in the Allegheny Mountains has been ravaged by what seems to be a man-eating giant Allegewi, and two of the loggers are still missing.
- 22
The Atlas Pin
Argost has stolen from Naga a relic that can identify the real Kur.
- 23
Paris is Melting
When Fiskerton is framed for a series of night-time attacks on fellow Secret Scientists, the Saturdays are placed under house arrest.
- 24
Where Lies the Engulfer
Zak's been training in the shadowy mercenary arts under Doyle's hand, and now it's time for the final test.
- 25
Shadows of Lemuria
Fiskerton's inherited Lemurian instincts are supposed to lead the Saturdays to where Kur will be revealed, but all they seem to be doing is driving Fisk nuts.
- 26
Kur Rising
At last, the Saturdays have learned where Kur will be revealed: a frozen caldera in Antarctica.