Haunted by the sins of his past, a British occult expert (whom you might know from DC's Legends of Tomorrow) uses all of the skills and spells at his disposal to track down the supernatural entities and demons plaguing our world. And if Constantine can send these horrors back to the hell they came from, then he might just save his own soul.
Matt Ryan (DC's Legends of Tomorrow)
Harold Perrineau (Lost, The Matrix Reloaded)
David S. Goyer (The Dark Knight, Blade)