House of Anubis S02E09 - House of Combinations

Nina and Fabian puzzle over the mysterious cube that they have found in the tunnels, but it falls into the wrong hands. Soon, Jasper steals it for the Collector, his apparent patron. Nina figures out how to make the mysterious cube into a key to unlock the first door in the tunnels, and, soon, Sibuna faces their next task. A deadly endeavor that involves potentially fatal traps.