Very, very scary especially when the demons finally reveal their demonic faces!  A  rock band finds themselves in a middle of a really big problem when they find out the people in the venue they're playing to are demons.  Commendable production design and special effects makeup and prosthetics used,  very realistic and uber scary.  Acting was also laudable and horror mixed with comedy never fails to heighten the action.  This film also gives a glimpse of some noteworthy rock music as played by the band.  Check out this film for some scream treat especially on a Halloween night.