Let's see. How many points can we give this presentation for originality?
1. Lifetime flick. 2. Lead actress from Canada (probably many of the support cast, too). 3. Filmed in Canada. 4. Nefarious female tenant/neighbor up to no good, and intent in causing havoc to her neighbors/landlords. Neighbor has designs on lead actress' husband. 5. The villainess has a dark past, missed by all until late in the flick. 6. Lead actor/husband (object of nefarious neighbor), while presented as an educated, competent professional, is a total clueless dolt. 7. Huge knife (larger than used by Capt. Ahab when whaling) wielded towards the end.
I think somewhere there is a little man in a dungeon office, with a laptop, pre-programmed with the above parameters: he simply fills-out the "form" for a new ensemble of actors, with the story's characters' names, professions, and fictional locales --- sends it to Vancouver, and the script for the next Lifetime flick is ready to go (to be filmed in Canada - probably Vancouver - regardless of the movie's purported locale).
However, these films do provide a benefit for all of us to gauge our mental health. Should anybody ever watch one and begin to feel empathy for these repetitive, cardboard characters - much less ever begin to believe that the events portrayed bear any resemblance to reality --- then some psychiatric counseling should be sought, before all sense of reality is lost.