In the "Blackest Night" crossover, his remains are reanimated as a member of the Black Lantern Corps, and he joins the reanimated Jack and Janet Drake, John and Mary Grayson, Tony Zucco, and the original Batman's deceased rogues gallery members in an attempt to take the life of the current Batman and Red Robin. They are met with interference from Deadman, who had possessed the body of Etrigan the Demon. Their attack is ultimately called off when Batman and Red Robin cryogenically freeze themselves, leaving no emotions for the Black Lanterns to target. Harkness later joins other reanimated members of the Rogues to target their still-living members. However, the battle results in a draw on both side. Harkness' son, Owen, arrives and takes him away from the battle, believing he can bring his father back. Digger convinces his son that he needs to feed upon the living in order to live, so Owen lures people (such as newcomer villain Sandblast) to a pit at a construction site where Digger is waiting. The Rogues track Owen down, Captain Cold berating him on how foolish he is to believe Digger's lies. When they discover the remains of a family nearby, Captain Cold reminds Owen that "the Rogues don't kill women or children." He shoves Owen into the pit where Digger rips out his son's heart. A black ring then flies down to make Owen a Black Lantern. The Black Lantern Harkness and his son are then encased in ice by Captain Cold. Digger manages to escape and join in the mass battle against the heroes where he is brought back to life and rejuvenated. He appears confused as to what is going on before being knocked out by the Flash.