it amaze to think that this movie come out only one year before star war but seem a million year behind it in sophistication and special effect . actually and the art direction and set design ( nice victorian space ship ) aren not bad while it the monster costume that be the most laughable and resemble the guy in a rubber suit monster from the lose in space tv show . the evil cave man makeup remind me of some of the alien from ancient twilight zone rerun . the script be stilted and and outside of peter cushing comic relief the acting be pretty miserable too . this movie be only recommended if you really enjoy bad kitschy sf . and the music . yikes . a horrible 70 experiment with synthesizer that doesn not fit the time period of the film and which sound like someone ramble with a minimoog and a 2 track tape machine .