Martin Mystery
Season 1, Episode 17: Beast from Within
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A slug monster named Gastromo makes Martin, Java and M.O.M its hosts and Diana is the only one left who can save them.
All Episodes - Season 1
Episode 1
It Came from the Bog
Episode 2
Terror from the Sky
Episode 3
Shriek from Beyond
Episode 4
The Creeping Slime
Episode 5
Curse of the Deep
Episode 6
Nightmare of the Coven
Episode 7
Mark of the Shapeshifter
Episode 8
Mystery of the Vanishing
Episode 9
It Came from Inside the Box
Episode 10
Attack of the Sandman
Episode 11
Eternal Christmas
Episode 12
Return of the Dark Druid
Episode 13
They Lurk Beneath
Episode 14
Haunting of the Blackwater
Episode 15
Mystery of the Hole Creature
Episode 16
Fright from the Ice
Episode 17
Beast from Within
Episode 18
Curse of the Necklace
Episode 19
Revenge of the Doppelganger
Episode 20
The Return of the Beasts
Episode 21
Attack of the Mothman
Episode 22
Summer Camp Nightmare
Episode 23
The Sewer Thing
Episode 24
Scream from the Forest
Episode 25
The Amazon Vapor
Episode 26
The Awakening