When Fred's favorite adventurer, Dr. Rick Spartan, starts teaching biology at the Crystal Cove's High School, the gang gets to meet him. Fred tells him that the gang has also been into some terrifying experiences, Spartan immediately invites them to have dinner at his place, where he promises to show them his latest trophy, the cursed Shrunken Head of Squar Gringot. But when its headless body appears and threatens to pursue the professor until the end of his days for plundering its tomb, the gang must find out a way to break the curse.

The episode was rated 7.98 from 95 votes.

Sick in bed right before the big Mystery Solvers Club State Finals, Scooby dreams about going to the competition and teaming up with fellow mystery-solver sidekicks Speed Buggy, Jabberjaw, Captain Caveman and The Funky Phantom to rescue their friends from the clutches of the demonic Lord Infernicus.

The episode was rated 8.00 from 125 votes.

When the gang goes on a quest to find out what happened to the original Mystery Incorporated group on their last case of the 75 year old disappearance of the Darrow Family and their mansion, they find themselves trapped in the underground Darrow Mansion, which has been booby trapped. Will the gang solve the mystery and escape with their lives?

The episode was rated 8.02 from 117 votes.

Feeling left out of the group, Velma goes solo to investigate attacks by amphibious "Fish Freaks" in the area around an abandoned oil rig, only to find a friend of her own... in the form of a mermaid!

The episode was rated 8.02 from 115 votes.

A monster called the Fright Hound starts attacking Crystal Cove and people believe Scooby-Doo is behind it. Could Scooby be the one attacking the city or is someone setting him up?

The episode was rated 8.07 from 136 votes.

There's a vampire loose in Crystal Cove, terrorizing the residents and stealing an odd assortment of loot. When the gang does some sniffing around, they discover an unlikely suspect… Daphne's MOTHER. Things are already strained within Mystery Inc., and with this latest blow, the gang is truly torn in half. Girls on one side, boys on the other.

The episode was rated 8.08 from 139 votes.

The ghost of Crystal Cove's most famous sheriff, Death Justice, has come back from his grave to make Sheriff Stone quit his job by trapping Crystal Cove's top criminals. Can Scooby and the gang stop Death Justice before it's too late?

The episode was rated 8.16 from 98 votes.

When Fred invites the gang on his and Daphne's second date, it pushes Daphne into the arms of Obnarb, the leader of an Orc Biker group called the Wild Brood who have come into town. When a break in at the armory happens and a dangerous weapon is stolen, the Wild Brood are the top suspects. It's up to the gang to solve this mystery, save the Wild Brood, and find the imposter Orc Biker.

The episode was rated 8.17 from 114 votes.

When an exchange student named Mai Le comes to Crystal Cove, she draws the affection of Shaggy. A dinner party hosted by the Blake Family is interrupted by the Red Wizard warning to stay away from the Dragon's Heart which he has sworn to protect at all cost. Later, Mai Le and the gang to come under attack by a White Wizard who is after Mai Le's ring, and the Red Wizard comes to the gang's rescue, but he is too late to save the ring. The Red Wizard turns out to be Mr. Chen, the owner of Chen's Internet Cafe and Tea House. He reveals that with the White Wizard, now in possession of all four rings, is able to open the Jade Dragon's Heart, which is a priceless ruby. Will the gang solve the mystery or is everything not as it seems?

The episode was rated 8.19 from 117 votes.

Scooby and Shaggy win an essay contest to have dinner with Vincent Van Ghoul. They go to his mansion and are attacked by a monster who calls himself Nightfright. Shaggy calls the gang and the gang rushes over. The are chased by Nightfright and go into a room and lock the door. Fred makes a trap and asks Vincent to lure the monster into it. Finally, they catch Nightfright in Fred's trap. The end of the episode shows them eating dinner, Daphne devouring everything in sight because she has not eaten for hours.

The episode was rated 8.20 from 100 votes.

With Mystery Inc. broken up, the gang decides to check out life after high school and spend a weekend at DARROW COLLEGE. But things don't go as planned when a creature called CHAR GAR GOTHAKON begins terrorizing the campus. Turns out this beast is a fictional character come to life. A creation of the author H.P. HATECRAFT who is a professor at the school.

The episode was rated 8.25 from 122 votes.

When Mayor Jones buys online an ancient Persian temple, in order to boost business in Crystal Cove's amusement Park, "Creepy Spooky Terror Land", he never thought that that temple would come with a Manticore, a vicious mythological animal, who is been eating the park's visitors. Having no other option, he asks Fred and the gang to help him capture the beast, and while they do it, he does some snooping around, regarding the mysterious puzzle piece that the gang found in Darrow Mansion.

The episode was rated 8.32 from 98 votes.

When Fred's dad is being attacked by an unknown shadowy figure it's up to Scooby and the gang to get to the bottom of the mystery. Will they be able to, or will Fred have to give up mystery solving forever? And what does the puzzle piece Fred's dad possesses have to do with it all?

The episode was rated 8.32 from 100 votes.

A high-tech creature called Obliteratrix attacks the gang and forces them to investigate the case of the haunted treasure with the help of H.P. Hatecraft.

The episode was rated 8.34 from 103 votes.

The gang finally follows the trail to find the hidden treasure, but they didn't think The Freak would go after them. On the other hand, many truths are revealed, including the goal of Professor Pericles and the true identity of Fred's parents. And as if that were not enough, the gang faces a big problem when the parents get angry due to the behavior of their sons. And just when the mystery of the town is at its highest level, does this mean the end of the gang or the beginning of a new problem?

The episode was rated 8.45 from 103 votes.