The story of "Sandtrap" won't be very original to most viewers - it's kind of a cross between "Body Heat" and "The Most Dangerous Game". As well, each of the three characters has been written to come across in an embarrassing way a few times (especially David John James' character when he starts getting delirious), and the characters make some silly actions at times. Still, it looks slick and well-shot, it's never boring, and there are some really good moments - especially the ending, which is very satisfying.
