Miscellaneous
Old Speech: This is the spoken form of the ancient language of the Old Ones. When an Old One comes to power, this language is used instinctively by the Old One when speaking to members of The Light or The Dark. Will Stanton begins to do this without even realizing it. When an Old One speaks the Old Speech in front of a normal human, it will sound like gibberish. Some agents of the Dark, such as The Rider can also speak Old Speech, but with a distinctive accent which gives them away to the Old Ones.
Read more about this topic: The Dark Is Rising Sequence