Season 1 Episode 12:
The children begin to unravel the mystery around the missing red diamond; Max keeps a secret from his siblings.
A new foster couple temporarily take in Anika and Sal while Max and Tess uncover news about the blue diamond.
The Hunters attempt a high-stakes exchange to rescue their parents while working to outwit Aunt Hedwig and Uncle Eugene.
When distant relatives, Aunt Hedwig and Uncle Eugene, are brought in to look after the Hunter children, the children worry their relatives are more interested in the Hunter fortune than helping the family.
A mysterious message helps the Hunter children track down the elusive "Magpie," but it may be too late as others suspect the children are home alone.
The Hunter children put on a diamond exhibition to lure their nemesis out of hiding.
Max and Tess follow a clue to an Amsterdam cemetery where they uncover an old family secret and an unknown key; Anika has suspicions about the new cleaning lady.
Max and Tess track the mysterious Rinus through Amsterdam and discover a cryptic notebook; at the Hunter house, the other children make a mess while trying to cheer themselves up.
When Max gets into trouble at school, the headmistress decides she must speak with his foster parents; the children scramble to distract the headmistress from their foster parents' absence.
The Hunters discover a secret room in the house; a clue sends Tess on the trail of a mysterious figure.
The Hunters stay home from school to search for their missing parents and find more than they were expecting in the Hunter House Library; Anika leads a museum tour.
Max wakes up in his new foster home to discover his foster parents have vanished; Max and his new brothers and sisters embark on an adventure to find them.