Fear X is a 2003 psychological thriller film directed by Nicolas Winding Refn. The first film to be produced from one of Hubert Selby Jr.'s original screenplays, its eventual box-office failure would force Refn's film company Jang Go Star into bankruptcy. Refn's financial recovery was documented in the 2006 documentary The Gambler.
A security guard's wife is killed in a seemingly random incident. Prompted by mysterious visions, he journeys to discover the true circumstances surrounding her murder.