This is a film that is well worth watching, and is in danger of being forgotten. I suspect this is because for whatever reason, it has been completely overlooked by not being issued either on video or DVD. I know that there ARE copies to be had, but these are usually from questionable sources and are of inferior quality. The only time I have seen a decent copy is when it has been shown on TV. Certainly, if I was to compile a list of films that have been neglected and are overdue for release, this would way up there on top. Sci-fi films are not usually my bag, but this film holds your interest all the way, and has fine performances from all concerned.