The BEST Episodes of Unnatural History

Every episode ever - ranked by fan votes!

Last Updated: Dec 3, 2021

Network: Cartoon Network

This show follows Henry Griffin, a teenager with skills acquired through years of travelling the world with his anthropologist parents. He must now use those skills to move back to America and attend a public high school in Washington D.C. With the help of his cousin Jasper and his friend Maggie, Henry uses the skills he learned around the world to solve the modern mysteries of high school

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Past, Presidents and Future

#1 - Past, Presidents and Future

Season 1 - Episode 13 - Aired Sep 21, 2010

Henry follows a clue trail left by George Washington as a school election pits Jasper vs. Maggie.

star 7.85
156 votes
Directors: Allan Kroeker
Writers: Michael Colleary, Mike Werb
Now You See Me

#2 - Now You See Me

Season 1 - Episode 9 - Aired Aug 17, 2010

After a teenage magician makes a Senator's son vanish, using an old magic trick of Houdini, the disappearance is investigated by Henry.

star 7.61
132 votes
Directors: John Fawcett
Writers: Chris Easterly
Thor's Slammer

#3 - Thor's Slammer

Season 1 - Episode 11 - Aired Aug 31, 2010

Henry tries to clear his uncle's name by solving the murder of the former partner of Jasper's father and finding a Viking artifact that he was looking for.

star 7.54
188 votes
Directors: Mikael Salomon
Writers: Jeff Eckerle, Marilyn Osborn, Michael Colleary, Mike Werb
Curse of the Rolling Stone

#4 - Curse of the Rolling Stone

Season 1 - Episode 8 - Aired Aug 10, 2010

When a ruby, which is supposed to be cursed, ends up stolen, Henry and his friends try to find the ruby and return it to the museum.

star 7.48
216 votes
Directors: David Solomon
Writers: Mike Werb

#5 - Speetlemania

Season 1 - Episode 12 - Aired Sep 14, 2010

The gang discovers an extinct beetle species.

star 7.44
157 votes
Directors: Michael DeCarlo
Writers: Thania St. John
Liberian Candidate

#6 - Liberian Candidate

Season 1 - Episode 7 - Aired Aug 3, 2010

Henry runs into an old friend and rival from the past. Henry believes that this friend's father may be targeted for assassination.

star 7.44
244 votes
Directors: Paul Shapiro
Writers: Michael Colleary
Fountain of Truth

#7 - Fountain of Truth

Season 1 - Episode 5 - Aired Jul 20, 2010

Inside a trunk, Henry encounters artifacts, which guide him to a discovery by Ponce de Leon.

star 7.43
248 votes
Directors: Holly Dale
Writers: Thania St. John
Maximum Insecurity

#8 - Maximum Insecurity

Season 1 - Episode 10 - Aired Aug 24, 2010

When a gang of thieves try to steal a WWII computer, Maggie, Jasper and Henry are cornered in the museum, unable to escape.

star 7.34
217 votes
Directors: Ken Girotti
Writers: Rob Wright
Public School Enemies

#9 - Public School Enemies

Season 1 - Episode 6 - Aired Jul 27, 2010

Henry stumbles upon a secret in the Dillinger car.

star 7.32
217 votes
Directors: Chris Grismer
Writers: Mike Werb
Heart of a Warrior

#10 - Heart of a Warrior

Season 1 - Episode 4 - Aired Jul 13, 2010

A traveling Samurai exhibit, rumored to be haunted, comes to the museum. When, Henry discovers that some of the exhibit items are being stolen, he is not believed by his uncle. Henry, Maggie and Jasper therefore try to take matters into their own hands, shadowing a martial artist, who they suspect is the thief.

star 7.17
333 votes
Directors: Tim Southam
Writers: Jeff Eckerle, Marilyn Osborn

#11 - Pilot

Season 1 - Episode 1 - Aired Jun 13, 2010

Henry's parents decide that it's best for him to go to a high school after traveling the world. In his new school, he meets new friends and uncovers a huge secret.

star 7.00
401 votes
Directors: Mikael Salomon
Writers: Mike Werb
The Griffin Gang

#12 - The Griffin Gang

Season 1 - Episode 2 - Aired Jun 20, 2010

Henry must find a cure when an ancient virus is released.

star 6.79
451 votes
Writers: Chris Easterly
Sleeper in a Box

#13 - Sleeper in a Box

Season 1 - Episode 3 - Aired Jun 27, 2010

Investigating a strange "stone," Henry and his friends discover that the object is actually the remains of the Soviet satellite Sputnik - that's wanted by Russian mobsters.

star 6.77
451 votes
Directors: Paul Shapiro
Writers: Michael Colleary