I had the chance to sit down and watch the 2020 thriller "Psycho Sister-In-Law" (aka "Sinister Sister") here in 2021. I hadn't heard about the movie prior to watching, so I only know what I was in for a thriller. But the movie's synopsis actually sounded okay.
Writer and director Jake Helgren did manage to put together a movie that was watchable, no doubt about that. But "Psycho Sister-In-Law" suffers from being a generic thriller. Jake Helgren seemed to simply cash in on all the stereotypical and generic tropes that makes a thriller. So the movie here didn't really differentiate itself from numerous other thrillers similar to it. In fact, it seemed like Jake Helgren was running things on auto-pilot, so it was bit of a stale and bland movie experience.
The storyline told in "Psycho Sister-In-Law" was adequate, although it was generic. And you knew the very outcome of the movie from the moment the movie started, so there was that, yeah, it was that predictable and generic.
The acting performances in the movie were adequate, although there weren't any particular outstanding performances. With that being said, don't get me wrong, because the actors and actresses did good enough jobs, they were just hindered by a generic and predictable script.
Ultimately then "Psycho Sister-In-Law" is a watchable, although rather forgettable thriller. And if you do enjoy thrillers, then it is doubtful that this 2020 movie from writer and director Jake Helgren will impress you much.
My rating of "Psycho Sister-In-Law" lands on a four out of ten stars.