Without giving anything away I'll be a bit vague. We all know this plot script having seen/read many iterations before. Positive: Credit for the little twists to the who dunnits. Negatives: It just plodded along w/exaggerated, artificial & not believable character roles. Also, not believable that such a mentally healthy Go player would be in this scenario. And, not believable were the elaborate cover ups & the subsequent sleuthing. Finally, the irony of the ending was also far fetched & contrived. Acting - meh!