The movie deals about John Constantine (Keanu Reeves) , a tough detective in charge of exorcisms and throwing out supernatural beings and bizarre creatures toward hell , employing only as weapons a shot-cross and holy water . He has ability to go and back from inferno . He is helped by a sympathetic apprentice (Shia LaBeouf). Constantine teams up with a gorgeous policewoman called Angela Dodson (Rachel Weisz) to resolve the rare suicide of her twin sister (also interpreted by the same). They try to investigate the deeds at whatever risk . In the beginning , skeptical Angela doubts on the mysterious events are happening but she is caught up by ominous demon . Both protagonists will confront against forces of evil , the devil , Balthazar and underlings (Peter Stormare , Gavin Rassdale) . It's a horrible struggle between Angels- Gabriel (Tilda Swinton)- and demons developed in contemporary city Los Angeles .

From the start to the finish the action-packed and suspense is unstopped . The movie is spectacular and exciting and the supernatural plot is narrated in stimulating and moving manner . The film is plenty of tension , thriller , terror , grisly murders and is developed in fast moving and for that reason results to be entertaining . Picture has a plethora of special effects created by computer generator describing catastrophic series of of otherworldly happenings and weird entities ; they are realized by the master Stan Winston for animatronics effects and for the make-up ; besides the visual effects are created by Phil Tippet (Starship Troopers and Jurassic Park) . Colorful and sensational cinematography by the French Philippe Rousselot . Exceptional as well as lively musical score by two excellent musicians : Klaus Badelt and Brian Tyler . Motion picture was well directed by Francis Lawrence . The flick will appeal to Keanu Reeves fans and fantastic thriller enthusiasts.