Who doesn't like thrillers? There are some psychological thriller films that become huge hits, making lots of money and earning praise from critics. They become a part of cinematic history. But in the sea of popular blockbusters and beloved classics, there are also films that don't get as much attention. These hidden gems are waiting for people who are curious enough to explore beyond the usual choices. From lesser-known indie dramas to films with famous actors that didn't get the spotlight they deserved, each movie on this list of underrated psychological thrillers offers an exciting journey into the genre.