. . . . "1"^^ . . . . . . . "Warren Christie as Luther"@en . "Dead Man's Blood is the 20th episode of Season 1. It aired on April 20th, 2006."@en . . "Dead Man's Blood"@en . . "Jeffrey Dean Morgan as John Winchester"@en . . . . "Dead Man's Blood"@en . "2006-04-20"^^ . "20"^^ . . "Dead Man's Blood is the 20th episode of Season 1. It aired on April 20th, 2006."@en .