Delirium starts off with an impotent Vietnam veteran called Charlie going on a murder spree, killing mainly young women. Just to keep the viewer interested two victims happen to be naked. But then the plot goes from horror/slasher to a thriller about a secret group of businessmen who carry out vigilante murders. Charlie had been part of this group but has gone off the rails. The police investigation takes up much of the running time and it does slow the movie down quite a lot, not helped by having a cast of mainly bad actors. The movie features a number of Vietnam flashbacks, they are ether obviously not filmed in Asia or stock footage is used. Combat Shock (1984) meets a gone wrong The Exterminator (1980). The body count is sufficient, some of the kills are fairly brutal but none are exceptionally gory. Delirium found itself banned in the UK as a Video Nasty, thankfully it is now available uncut and on Blu-ray. I would have rated it 5/10 but have scored it an extra point due to the inclusion of a track called Approaching Menace on the soundtrack, viewers in the UK should instantly recognise it as the theme tune to BBC's quiz show "Mastermind". I found this rather amusing. Shot on 16mm but blown up to 35mm Delirium is a low budget trash movie, if that's your thing or if you are interested in Video Nasties then I would recommend it, otherwise give it a miss.