Ideally, of course, you want to take actions that combine attack with safety. For this, an effective strategy tends to be to lead round to a weak suit in dummy.
Good players differ from average players mostly in this: that the good player tries to play all fifty-two cards, and the average player plays only the twenty-six which he can see.
Crime in London appeared to be taking a vacation, and so it seems was Sherlock Holmes when he found himself on opening lead at the Baker Street Bridge Club: