This intense and visceral horror film about the dangerous and obviously seductive succubus (a female demon that preys on men) takes its material seriously. It is a slow burn of authentic plot design that portrays an estranged husband whose descent into terror is believable and realistic. This sinister movie has a credible message about temptation and its consequences using even some echoes from films such as John Cusack's superior occult horror 1408 (2007) and as well as his bizarre role in the highly rated Being John Malkovich (1999). The low IMDb rating could be attributable to the overall creepy and insidious nature of the succubus as depicted in this movie which would repulse women and terrify men. However, this movie by its end has both a bitter yet sweet ending of sorts and the excellent special effects and the creeping horror of its believable plot outline is worth remembering for anyone who lives on the edge of instability and wanton desire.