My observations so far are: Most in here are pretty certain that BC is guilty of murdering NC, a few are still open minded about it ( a good idea since the trial is not over by a long shot), and I haven't seen anyone in here who 100 percent is convinced he is innocent (another good idea since the trial isn't over and he is the most likely suspect). What is amazing in here is the depth of passion that everyone has for their particular belief.
...and good observations, though those still "open minded" come across as less emotionally attached to the case. Someone above stated (correctly) that "An explanation involving circumstantial evidence becomes more valid as proof of a fact when the alternative explanations have been ruled out".
To this point (and unless you've decided to toss out any objective consideration), many of the alternate explanations make more sense, and are less of a stretch than the ones the pros would have you believe.