Psychosis is a 2010 British horror film directed and written by Reg Traviss, with story by Michael Armstrong.
The movie flashes forward 15 years to 2007, as a successful crime novelist Susan moves into a nearby house with her husband David, who purchased it in hopes of helping her with her writing.
It is later revealed that Susan had previously suffered a mental breakdown due to seeing and hearing the things that were not actually there, which was another reason for David purchasing the house.
After David leaves for a "business trip" (quickly revealed to be an excuse to indulge in affairs), Susan is drugged and raped by Peck.
[6] Dread Central wrote that "Psychosis is definitely worthy a watch, and in the end it's only its pacing issues that keep it from rising about the good level into greatness.