Martin Mystery - Season 1 (2003)

Martin, Diana, and Java are in Monte Carlo to help guard a treasure that belonged to an ancient tribe that mysteriously disappeared. However, a nearby Leviathan wants to eat them while looking for the treasure.

Follows a company which is building on an Indian land and Martin looks in the case and he found that a boy called a wolf spirit by his grandfather's necklace.

Martin, Diana, and Java end up in an alternate world with a mysterious family named the Applebyes and a dragon named Zook who feeds on humans' life force every several years.

Mysterious things go on in a remote town in Alberta, Canada, and Martin soon finds out that a chaos beast is behind all the mayhem. It's up to Martin, Diana, and Java to save the day.

At a University in Sydney, Australia a Professor doing experimental sleep research, has unwittingly unleashed the Sandman. A mythical creature that traps sleeping people in his nightmare world. In order to stop him, MD&J must journey into the nightmare world and confront their own fears.

Martin, Diana, and Java are sent to investigate a town in Newfoundland and Labrador that is being attacked by a siren. They soon realize that a sailor had a special, but very short relationship with the siren. So the siren seeks revenge. (Note: outside of Canada, this episode took place in Norway)

A mystical snow globe is in the possession of an owner of a shop in the Laurentians who wants to have a "perfect Christmas." Soon the snow globe's contents are released but are actually evil.

An evil druid wants to have his revenge on the people of a town in Nova Scotia by turning them into trees.

Martin, Diana, and Java are sent to an all-girls college in Cap Ferrat, France to investigate the disappearance of the school's principal. The trio soon discover that the new principal is actually a witch and starts turning the students, including Diana, into witches.

An archaeologist, Professor Melanie Samson, accidentally releases an ancient civilization of aliens that has been living underneath the Nazca Lines in Peru, who want to conquer the Earth.

The ghost of a former lodge owner begins to haunt his lodge in British Columbia and Martin, Diana, and Java must find a way to vanquish him when Diana is possessed by the spirit.

Martin, Diana, and Java are sent to an Indian temple in Mohenjodaro to stop an evil scientist from retrieving its treasure and spirit of darkness, Nadu.

When a young woman discovers an ancient Celtic necklace, strange things begin to happen. Martin, Diana, and Java discover that an evil spirit has inhabited her so she can give out evil candy, which causes people to become their costumes.

An ancient ice monster is threatening a mountain resort in the French Alps (Swiss alps in its initial airing) so Martin, Diana, and Java must find a way to stop it before it turns them into ice.

A beast escapes from the center which was mom's first mission and how did martin mystery and team catch it back again.

A woman expels her doppelganger and it starts going on a rampage around Montreal, stealing any other woman's face that looks like her, including Diana's.

Reminiscence of the mission that helped them meet "Java the Caveman".

A French school student falls victim to an illegal experiment and is transformed into a moth-like creature. He soon seeks revenge on those who transformed him.

Martin, Diana, and Java are sent to a summer camp in British Columbia to destroy a lizard alien that is feeding on the life force of the campers.

A research facility custodian is exposed to a dangerous chemical, transforming him into the Ratman. He seeks revenge on the scientists who transformed him.

An alien family called the Synths try to reclaim their territory in Quebec's forests. They capture Martin, his father, and Diana. They have to help themselves before the Synths feast on them.

Mission to find why the amazon rain forest is dying after a lake drilling accident.

An ancient Chinese servant tries to revive an ancient emperor and his warriors in order to revive the dynasty.