All of those wild special effects were largely the work of one Tom Sullivan: he never became a household name like Tom Savini or Dick Smith but his strange wizardry lives on with gorehounds. He's become a regular on the horror convention circuit, where Deadites of all ages give him a hero's welcome every time. His story is told in Invaluable: The True Story Of An Epic Artist and the result covers his career in-depth as well as providing insight into Sam Raimi, Bruce Campbell and their group of friends/collaborators from a novel angle.