aka Swamp Diamonds, aka Cruel Swamp
How bad is it? It's like very bad film noir.
Should you see it? It's only for Roger Corman fans.
An undercover policewoman searches for diamonds hidden by three female prisoners in a Louisiana swamp. They end up fighting over Mike Connors. With Beverly Garland and Marie Windsor, who have their fans and have been in a ton of horror films. This is one of Roger Corman's non-horror films, but is no better nor worse than those.