Some people who are intelligent and sound of mind, believe that a guilty past pursues a person until the offence has been exorcised. This is a deeper problem than conscience can solve. You may regret something, and you may make amends for it, and then perhaps your conscience is clear. But what if you have done something unforgivable? What if the person you have harmed is dead? Is it in his power to make you suffer because you can never make amends? It was a warm Sunday afternoon in mid-October in 1890 and most of the strollers had left the Boston common to go home for tea...