This is the first Korean production I’ve watched in a movie theater and what a difference it makes (duh!), not only the large screen but the sound effects. After watching that on theater I free downloaded the movie for safe keeping. That’s because Korean films are generally not shown in American markets. Wish they were more widely available. This is a story about faith and good triumphing over evil. This movie is intense, scary at times, and will make your skin crawl. But it also evokes emotions, joy, and relief! It is not cheesy. It is extremely well acted, directed, choreographed, and believable with good special effects. Kudos to Park Seo Joon and the other actors who all stayed in character and performed well. You forget they are acting. Unlike the seminal film, the Exorcist, there is no vulgarity, excessive swearing, and blasphemy (the reason I rarely watch contemporary American films), but the shock value is there and the message is powerful. If properly marketed, this film can be as popular as Train to Busan, and representative of the impressive Korean film industry. As a Christian (protestant) viewer, I heartily recommend this film whether you are a believer or not as it is entertaining, not offensive. You will cheer! Bravo!