Sara and Jake investigate what appears to be ritualistic murders.  A drawing on the wall leads them to a musician named Conchobar.  He sings Sara an unfinished ballad that has a strange similarity to the murders.  On top of this, Sara starts having dreams of a past Celtic life where she and Conchobar are the two mentioned in the ballad.  Kenneth Irons invites Sara to his office where she reads ancient Gaelic texts about the same story.  Now, armed with more facts and an ending to the song, Sara and Jake must find the murderer before he strikes again.