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(Eddie Chan) plays a murderous salesman in this Hong Kong suspense-thriller about a mind gone haywire. When he discovers his wife has been seeing a lover in their own house, he kills both of them and then goes to jail for the crime. After he serves his prison term, the salesman looks like an ordinary person but he goes berserk when he sees any woman wearing the nylons that his wife used to prefer -- and rage takes over, leading to a killing spree. Although he cannot get away with his crimes forever, in the meantime, his activities provide enough fear to keep a viewer's attention from drifting to the bag of popcorn.