1. Psychological Thriller film research

2. Black Swan
A ballet dancer wins the lead in "Swan Lake" and is perfect for the role of
the delicate White Swan - Princess Odette - but slowly loses her mind as
she becomes more and more like Odile, the Black Swan.
On IMDB the film has an overall rating of 8 out of 10 with comments such
as “A beautiful and nightmarish masterpiece” and “Perfect”.
https://www.youtube.com/watch?v=8yR-wZq82M4

3. The Silence of the Lambs
Young FBI agent Clarice Starling is assigned to help find a missing
woman to save her from a psychopathic serial killer who skins his
victims. Clarice attempts to gain a better insight into the twisted mind
of the killer by talking to another psychopath.
The film has an 8.6 out of 10, with comments like “A Story And A
Character That You Can't Forget” and “A Grand Thriller”.
https://www.youtube.com/watch?v=9dp5fpQPbIQ

4. Shutter island
It's 1954, and U.S. marshal Teddy Daniels is assigned to investigate the
disappearance of a patient from Boston's Shutter Island Ashecliffe
Hospital. He's been pushing for an assignment on the island for
personal reasons, but before long he wonders whether he has been
brought there as part of a twisted plot by hospital doctors.
The film has an 8.1 out of 10 on IMDB with comments such as: “Of all
the movies in theatres to see, this is worth your time” and “I can't look
away...”
https://www.youtube.com/watch?v=5iaYLCiq5RM