The man known as the ‘Graphic Novel Killer’ was sentenced Tuesday in the torture killing of his model girlfriend. Blake Leibel, 37, is co-creator of a graphic novel in which a young woman is savagely slain. Prosecutors say he co-wrote the gruesome comic book and then murdered his fiance in a chillingly similar way. The cover of the book ‘Syndrome’ shows a baby with its brain exposed. When Leibel's girlfriend gave birth to their child, prosecutors say he grew jealous of the baby.