Beware the seductive allure of investment banks Carl Mortished The stranger is charming, clean-cut and well groomed. A good companion, witty and worldly, he takes you to the opera, to the races and he seems to know lots of people. He is attentive; you meet regularly for lunch in quiet corners at exclusive restaurants. He listens as you talk about your problems, and he seems to care, offering comfort and sensible advice. Soon, you are confiding in this stranger, spilling your guts about your plans, business dealings and investments. Again, he has sensible advice to offer, but he asks for...