Not really a horror movie but a murder/suspense flick with some psychic insight by the femme fatale. The acting is really good...excellent as a matter of fact. There are some effective - if conventional - scare tactics. I cannot say that KNIFE EDGE is predictable as the expected "ghost influence" devise is not what you ultimately get. Despite the surprise twist the ending is still somewhat lacking, otherwise this would qualify as a fine movie. Also our lead male character's background and screen time should have been enhanced to the extent his female counterpart's was; i.e., as his past so vitally impacts on the plot. Overall, enjoyable but could've used more forethought.