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, Susan Charney, John Dennis, Philip Kenneally, Duncan McLeod, Virgil Frye, Tony Vorno Added on Amazon Prime 2023-02-06.