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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.
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CAST
Susan Charney
Carol Johnson
![](https://image.tmdb.org/t/p/w92/78XDuxSpAlTxpxMVbFi1EQpmjPW.jpg)
John Dennis
Jablonski
Philip Kenneally
Warden
Duncan McLeod
Dr. Saunders
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