Saw Starring Cary Elwes, Danny Glover and Monica Potter. Directed by James Wan. Running Time: 100 mins Rated: By now the ads "See Saw' will have drawn audiences into cinemas. Having seen it without any knowledge or preparation, I was impressed. It is a psychological horror thriller, a touch gory at times, but which keeps the puzzle going well, has some obvious turns but still manages to trick its audience with unanticipated twists - including the very end. It is not for the fainthearted. But enthusiasts of this genre will be very pleased.The star is Cary Elwes as a surgeon who finds himself chained in a basement along with an unknown young man. How will they get out? Will they get out? Who put them there? Who is playing sadistic mind games with them, especially with a saw that cannot make any dent on their chains?Wondering who was playing the young man, I discovered that his name is Leigh Whannell. The final credits then revealed that he wrote the taut screenplay and the IMDb revealed that he is a young actor from Australia. He has done a creditable job of acting and writing.It is a bit hard to say much else because one does not want to give away any major plot details. Suffice to say that Danny Glover appears as the investigating and obsessed detective.Fr Peter Malone MSC is the International President of SIGNIS: the World Association for Catholic Communications and an Associate of the Australian Catholic Film Office.