Summary

John Constantine (Keanu Reeves) is a private investigator who believes in things that go bump in the night -- an unconventional quirk that makes him somewhat of an eccentric personality in a world ruled largely by logic. When a female cop (Rachel Weisz) seeks his counsel after her twin sister dies in what first appears to be a suicide, she wants definitive proof of the cause of death. But the answers might only come with blind faith.