A scientific experiment involving subjecting a corpse to an extreme charge of electricity accidentally revives an executed criminal and makes him impervious to harm, allowing him to seek revenge on his former partners, and deal similarly with anyone else who gets in his way.
| Actor | Role |
|---|---|
 Lon Chaney Jr.Charles "Butcher" Benton | Charles "Butcher" Benton |
 Max ShowalterLt. Richard Chasen | Lt. Richard Chasen |
 Marian CarrEva Martin | Eva Martin |
 Stuart RandallCapt. John Lauder | Capt. John Lauder |
 Ross ElliottPaul Lowe | Paul Lowe |
 Ken TerrellJoe Marcelli | Joe Marcelli |
| MMarvin Press"Squeamy" Ellis (uncredited) | "Squeamy" Ellis (uncredited) |
 Robert ShayneDr. Bradshaw | Dr. Bradshaw |
 Joe FlynnBradshaw's Assistant | Bradshaw's Assistant |
 Robert FoulkHarry | Harry |
 Peggy MaleyFrancine | Francine |
| RRoy EngleDesk Sergeant | Desk Sergeant |
 Eddie Marr"Carney" | "Carney" |
 Marjorie StappJimmy's Girl | Jimmy's Girl |
| MMadge BennettDrunken Frump | Drunken Frump |
 Dorothy FordTall Stripper | Tall Stripper |
| MMadge ClevelandWitness to Ellis's Death | Witness to Ellis's Death |
| RRita GreeneCarney's Girl | Carney's Girl |
 Lyle LatellPolice Sergeant (uncredited) | Police Sergeant (uncredited) |
| RRussell CusterPolice Officer (uncredited) | Police Officer (uncredited) |
| FFred RapportObserver at Crime Scene (uncredited) | Observer at Crime Scene (uncredited) |