They agreed to raise their children to communicate solely with telepathy and regularly send letters updating the other members .
In actuality , Ilse 's parents were part of a secret society who learned how to use the latent telepathic abilities possessed by all humans .
parents agreed to raise parents ' children to communicate solely with telepathy and regularly send letters updating the other members .
In actuality , Ilse 's parents were part of a secret society who learned how to use the latent telepathic abilities possessed by all humans .