demon hunter returned to the studio to record their second full-length release, "summer of darkness", with mccaddon contributing, and again with jesse drumming. "summer of darkness" hit stores on may 4, 2004, and was a modest success, propelling demon hunter into the secular scene with the addition of the music video "not ready to die" on mtv2's "headbanger's ball" and fuse tv, along with single "my heartstrings come undone" being placed on the "" soundtrack. the album featured four guest vocal appearances, including mike williams of the agony scene on "beheaded," brock lindow of 36 crazyfists on "beauty through the eyes of a predator," howard jones from killswitch engage on "our faces fall apart" and trevor mcnevan of thousand foot krutch on "coffin builder".