Cass

Cass is one of the main protagonist in the story. She is a self-proclaimed survivalist, prepared for any disaster.

Books
In the first book, she goes to the Midnight Sun Sensorium and Spa to rescue the synesthetic boy, Benjamin Blake.

In the second book, Cass has the task of finding the Homunculus. It is revealed that the object the Sound prism belongs to her and she is a descendant of the Jester, the founder of the Terces Society.

In the third book, it is revealed that Cass is The Secret Keeper, the one who protects The Secret. She believed her father died in a camping accident, andfinds out she is adopted. The Homunculus takes a liking to her. She eats Senor Hugo's chocolate and travels back in time to try to unravel the Secret.