Crackle of Death is a 1974 film, the fourth produced in the Night Stalker film series. It combined the Kolchak: The Night Stalker episodes "Firefall" and "The Energy Eater" with additional narration by Darren McGavin as Kolchak. It also contains new dialogue by McGavin, Oakland and Grinnage, as well as new "scenes", such as a newspaper on a desk and the image of the Doppelganger being inserted into old footage (for example, when Kolchak looks at the sky, he sees the Doppelganger's giant face). The new material was put together in late March 1976.