Convicts on a chain gang sniff formaldehyde fumes to get high. They attempt a prison break and are shot down by the guards. After being buried, they rise from the dead, killing all in their path with shovels and hoes.
Marland Proctor
Paul Johnson
Susan Charney
Carol Johnson
John Dennis
Jablonski
Philip Kenneally
Warden
Duncan McLeod
Dr. Saunders
Virgil Frye
Braddock
Tony Vorno
Mitchell
Phil Hoover
Donovan
