Murders, with victims dying from spines broken by brute strength, erupt in the city and the killers, when encountered, walk away unharmed by police bullets which strike them. A police doctor's investigation of the deaths leads to the discovery of an army of dead criminal musclemen restored to life, remotely controlled by a vengeful former crime boss and a former Nazi scientist, from the latter's laboratory hidden in the suburbs.

Richard Denningas Dr. Chet Walker
S. John Launeras Capt. Dave Harris
Michael Grangeras Frank Buchanan
Gregory Gayeas Dr. Wilhelm Steigg
Angela Stevensas Joyce Walker
Linda Bennettas Penny Walker
Charles Evansas Chief Camden
Tristram Coffinas Dist. Atty. MacGraw
Pierre Watkinas Mayor Bremer
Harry Lauteras Reporter #1