Cryptic Plasm.

The story is about David Gates, a cryptozoologist who is hired to film his investigations. One of them being a mysterious town where all of its inhabitants have vanished without a trace. David uncovers far more than he anticipated and puts his own life at risk. Afterwards David begins to feel the bizarre effects from the town within his own biology. Meanwhile he is sent by his investor to film an exorcism. Something that is completely outside of his expertise. Already suffering from unnatural symptoms, David, who is now reluctantly in the presence of pure evil, fears that multiple inhuman forces are tearing him apart from inside.