The Old One

 was an ancient vampire. Ellie Higson asked Ravener for an audience with him. He lived underneath the streets of London. (AUDIO: Picture This)

He asked Ravener on the progress of Ellie's task. On hearing that Henry Gordon Jago and George Litefoot were very resourceful, he suggested that he should get rid of them. (AUDIO: The Flickermen)

After Ravener failed him, he ordered that Henry Gordon Jago and George Litefoot be brought to him. (AUDIO: School of Blood)

After Ellie brought the duo to them, he ordered his sleeping brethren to awaken and kill them. Ellie learnt the truth and she killed him. (AUDIO: Warm Blood)