Setting something of a record for flashbacks within flashbacks, The Locket recounts the mental disintegration of bride-to-be Laraine Day. As a child, Day was accused of stealing a locket at a fancy party. She has spent her life getting even for this false accusation by becoming a kleptomaniac and ruining the lives of those around her. She drives one man (Robert Mitchum) to suicide, and stands by as another man is executed for a murder which she has committed. Assuming her revenge on the world is complete when she becomes engaged to the son of the woman who'd accused her of thievery, Day is overtaken by the demons within her and collapses on the altar. The Locket is difficult to follow at times, especially when seen in commercialized chunks on the Late Late Show.
by Hal Erickson synopsis