Catherine Bailey

The gang work out they could be searching for the Cup of Ankh, and plot to steal the puzzle back from Victor. Plus, Patricia spots Joy in the audience at the play.

The gang reads a secret message hidden in the dictionary: their next clue. While trying to crack it, though, Victor forces Nina and Victor to hand the puzzle over.

Nina is trying to distance herself from the gang but still can't help solving the latest riddle.

While Patricia manages to decode a secret message from Joy arranging to meet after the play, Nina attempts to break into Victor's safe to steal the puzzle.

A shock is in store when Nina is revealed to be 'The Chosen One', and not Joy.

The gang overpower Rufus and escape, but, having learned the truth about the cup, they must stop the teachers drinking from it before someone gets hurt.