Is there a ghost on the loose in the Tower of London? That's what Emily and Alexander are afraid of when a diamond is stolen from Queen Victoria's crown.
Emily and Alexander set sail to help their cousin find a sunken ship and foil mean Barton McScavenger's attempts to steal its treasure.
Emily and Alexander smell a rat when they learn that the royal mouse emperor has been kidnapped.
In this spellbinding episode, Alexander is accidentally hypnotized, and walks into the desert in search of a lost oasis.
