The Mystery of the Galilean Grindstone

The truth is carved in stone—if you know how to read it.

The world has changed since the first time The Three Investigators went into action, but some things never go out of style. The persistence of truth. The power of perseverance. The importance of questioning everything.

Conceived and co-written by Elizabeth Arthur, the daughter of Robert Arthur, the creator of the Three Investigators universe, this exciting reboot of the classic series takes its iconic characters into a new age. They ret...