Things are looking pretty final as monsters appear all over the world and overwhelm all the Center agents while the now evil MOM and the Gatekeeper unite to destroy Martin, Diana, Java and Billy. Is this the end of the line for the gang and the Center?

While sick with a mystery illness Martin, Java & Diana are quarantined in the Center's medical wing and reminisce about their past adventures. Due to a misunderstanding they think MOM has decided to terminate them before they can spread the sickness and flee deeper into the Center unaware that the real cause of the alarm is that the Boogeyman has escaped and they're heading right for him!

On Christmas Eve in the Laurentian Mountains, an unlucky guy named Clifford is getting ready for Christmas. He's wishing for a perfect Christmas when he drops the lucky snowglobe he bought which is supposed to grant a wish on Christmas Eve. When it cracks Clifford disappears in a flash of red light.

After an incident at the school library Martin claims Diana is a \"goody two-shoes\". So she drastically changes her image in order to prove that she can be a bad girl when she wants. At the Center Mom tells them that there was a bizarre attack on the mayor or Stillwater, Louisiana by an invisible force and sends them to investigate. After a few more weird events they discover that a corrupt politician is using Voodoo Dolls to eliminate his competition. He intends to win the mayoral race and end up in the mayor's office. An office that was built to conceal an evil Shaman's lair. Once he harnesses the power of an ancient artifact hidden below he will become an unstoppable voodoo priest!

A lonely girl at Torrington finds a mirror that makes her pretty "like the Jenni's of the world" but every boy she touches turns into a monster.

Martin and the gang are off to France to check out the mysterious disappearance of two teens on a boat ride. When they learn that one of the missing teens works at a surf shop, they head there to check it out, and find a vampire who is sucking the souls out of people. She captures Martin, who is revealed to be the descendant of her husband, and forces Diana, Billy, and Java to go and rescue him before the vampires can unleash their brethren from the Banished Realm.

Looking for two missing Center agents strands the gang in the long lost underground city of Alpha-Omega. The Alpha-Omegans mistake the bald headed Diana for their missing Queen and the sign they've been waiting for to begin their conquest of the surface world.

While Marvin has left Torrington, Martin is irked that everyone "particularly Jenny" is still talking about him rather than paying attention to his extreme sports stunts. So his jealousy kicks into overdrive when he discovers that M.O.M. has made Marvin a Center agent and assigned him to work with Martin and Diana on their latest mission to investigate odd incidents at the Scopes Institute "a school for the blind", located in British Columbia. With Marvin out to flaunt his superiority, Martin seething with jealousy, and Diana drooling over Marvin, is anyone on the team focused enough to figure out what is really going on before the banished sorcerers called the Seers succeed in returning to spread chaos across the Earth?

Martin releases an evil warlock in order to win a competition.

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

A research facility custodian is exposed to a dangerous chemical, transforming him into the Ratman.

Martin, Diana & Java are sent to a Caribbean resort where people have gone missing. They find that the resort is actually run by shapeshifting zombies who are sacrificing the vacationers to a sea creature called Hexan.

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Kaitlin has fallen victim to her shadow, and as usual, it's up to Martin and Billy to save the day. They've found out that since the people who were safe slept in the light, that's the thing the shadow creatures are afraid of. With the help of the Legendex, they realize that the shadow creatures' leader, Barock the Faceless, wants to take over Earth, but needs all the humans in his realm before he can crossover—and when he does, the gateway will forever close. When Billy's gone too and Martin is the last being on Earth, the showdown begins.

When an entire train disappears MD&J discover that it has gone through a space-time portal and ended up in a paradise world – a world inhabited by a seemingly perfect 1960s family named the Appleby’s who have made a deal with Zook, an evil “lava monster” that feeds off the life-force of humans.

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

Martin, Diana, and Java investigate a small western town in Utah whose entire population seems to have disappeared overnight. Suddenly, the people return to the town, but they all seem a little different.

People living in New Mexico near the Los Lunas nuclear power plant wake up w/ missing hair and teeth, and also seem to be appearing in two places at once. When Martin, Diana, and Java arrive to investigate, they find some evidence of alien involvement that freaks Billy out and forces him to reveal his hidden past as Ganthar, the leader of a gang of extraterrestrial pirates.

At a Sydney, Australia museum, a robber is surrounded by a mysterious green mist. The group is sent to investigate. They discover that they were up against a genie who wanted to cause chaos all over the world. Java and Diana are rendered helpless by the genie's power. Can Martin stop the genie before it's too late?

A boy in a town, discovers a mystery website who has trapped an evil alien that uses the energy of others to get out of his web prison.

A boy decides to raise sea monkeys, but when the sea monkeys do not appear he flushes the packet down the toilet, where they reach polluted water and become sea mutants.

go with M.O.M on a six-day corporate retreat, a bad storm comes and they are forced to take shelter in a creepy old abandoned house. What they don't know is that the man who built the house is a spurned lover who still hasn't left...and doesn't want to let them leave.

Martin and schoolmate Jerry are chosen to join a secret society, The Bones, where membership entails cool powers like telekenesis and free stuff like extra dessert and sports cars. Both are thrilled until they find what awaits them in their "entrance test"...

Martin and Diana are stuck at school for Christmas until MOM invites them to the Center's Christmas party. All goes well, until an Evil Elf intends on ruining everyone's Christmas by twisting their Christmas wishes.

The ghost of a former lodge owner begins to haunt his own lodge and Martin Diana and Java must find a way to vanquish him when Diana gets possessed by the spirit.