Directed by John Hayes
Starring Philip Kenneally, Duncan McLeod, John Dennis
Convicts on a chain gang sniff expermental formaldehyde fumes to get high. They attempt a prison break and are shot down by the guards. Buried in the prison garden, they rise from the dead, killing all in thier path with shovels and hoes who get in thier way for thier quest to get high once more off the formaldehyde.