Anika is sent an unusual birthday present – a miniature pyramid wrapped inside a torn treasure map. Sal discovers they are tied to a long-lost Aztec treasure – and an ancient curse. A new mystery has begun!

Sal and Anika meet a nervous boy in the forest. While Anika befriends him, Sal is convinced he is a thief. But when the two of them confront him, he reveals a secret they never would have expected.

The kids find the stolen puzzle box and try to hide it from the police. Erik returns home but is acting suspicious. Daniel finds a clue in the museum footage. After tough goodbyes, Max leaves for Spain.

The Hunter kids put on a diamond exhibition to lure their nemesis out of hiding.

Erik is taken to the police station, where Daniel tries to find the evidence against him. Max talks to his birth parents.The police arrive to search the house.

The kids find evidence that could prove Erik's innocence. But someone hacks into Sal's computer and erases the footage! And Max realizes there is something strange about how his birth parents tracked him down.

Diane shows up and takes the crown when Erik is forced to go to the police station. The children finally uncover the mole's true identity.

Tess and Jake desperately try to convince relatives that the mole has framed Erik, but Sal's evidence is needed to prove Erik's innocence and stop the thieves from escaping with the crown.

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The Hunters discover a secret room in the house. A clue sends Tess on the trail of a mysterious figure.

Max & Tess track the mysterious Rinus through Amsterdam and discover a cryptic notebook. Back at the Hunter house the other kids make a mess while trying to cheer themselves up.

Max and Tess follow a clue to an Amsterdam cemetery where they uncover an old family secret and unknown key. Meanwhile, Anika has suspicions about the new cleaning lady.

The kids begin to unravel the mystery around the missing red diamond. Max keeps a secret from his siblings.

The Hunter kids must band together to outwit one of their biggest opponents.

Evie's stepmom, Lucia, tries to take her back.The Hunters try to track down info on Lucia and visit Evie's old neighborhood, where they meet tech-loving, Jennie. She provides footage that gives them their next clue.

The kids think Lucia framed Erik and decide to frame her back by planting a vase in her house. But the plan goes awry and they must work to avoid getting caught.

Tess and Sal work on discovering the mole's identity. Daniel and Anika spy on Lucia; the hacker learns he has been tricked.

Distant relatives Aunt Hedwig and Uncle Eugene are brought in to look after the Hunter children. The kids worry their relatives are more interested in the Hunter fortune than helping the family.

The Hunters attempt a high stakes exchange to rescue their parents while working to outwit Aunt Hedwig and Uncle Eugene.

A new foster couple temporarily takes in Anika and Sal while Max and Tess uncover news about the blue diamond.

The Hunters make a huge breakthrough but also suffer a big setback as they get closer to their ultimate goal.

The Hunters meet a young girl named Evie – and her necklace has the same crown symbol they discovered in the cryptex! And Erik reveals that he has a special connection to Evie.

Tess finds an old Ruybosch family tree and realizes it's marked with the same crown symbol. Jenny helps Sal investigate his hacker. And a comic book publisher approaches Jake with an interesting offer.

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