8 Best Conspiracy Documentaries on Netflix, Hulu, and Amazon Prime

4. The Imposter

IMDb Rating: 7.5
Available On: Netflix

Although not entirely conspiracy-related, this documentary has some elements of conspiracy, so we decided to grant it a place on our list. It tells the story of Frédéric Bourdin, an imposter who claimed that he was Nicholas Barclay, a boy from Texas who disappeared at the age of 13. He managed to trick the family and relatives of the boy but eventually was discovered by a private detective.