"Grand Slam" is a nice heist film, in search of an ending that makes some sense. The cast includes Janet Leigh, Klaus Kinski, and Edward G. Robinson, so the acting is totally acceptable. The intricate diamond caper is also depicted quite well, and the Rio locations another plus. What seems like an endless build up to the actual heist pushes the film into too long territory at just over two hours. Despite the length, interest is maintained until the startling surprise conclusion, an ending that will leave the bewildered audience gasping in disbelief after all that has preceded it. I defy anyone to explain the logic behind the ending of this film. To put things in perspective, even if things did take place off screen to support such a finale, it is far from believable, and leaves a very bad taste that is likely to linger for quite awhile. - MERK
Review of Grand Slam
