This is a super vehicle for Diana Dors as the imprisoned "Mary". We know right from the start that she gunned down "Lucy" outside her mews cottage, and that her appeal has failed. Death row looms as she sits in her cell, accompanied at all times by two prison officers, awaiting a reprieve that may, or may not, come. Whilst she waits, we wait - and we learn a little about just what drove her to commit this…