The impression here skilfully conveyed is, that the ghost seen is that of Reuben Haredale; and the mind of the not-too-acute reader is at once averted from the true state of the case—from the murderer, Rudge, living in the body.
Now there can be no question that, by such means as these, many points which are comparatively insipid in the natural sequence of our digest, and which would have been comparatively insipid even if given in full detail in a natural sequence, are endued with the interest of mystery; but neither can it be denied that a vast many more points are at the same time deprived of all effect, and become null, through the impossibility of comprehending them without the key. The author, who, cognizant of his plot, writes with this cognizance continually operating upon him, and thus writes to himself in spite of himself, does not, of course, feel that much of what is effective to his own informed perception, must necessarily be lost upon his uninformed readers; and he himself is never in condition, as regards his own work, to bring the matter to test. But the reader may easily satisfy himself of the validity of our objection. Let him re-peruse "Barnaby Rudge," and with a pre-comprehension of the mystery, these points of which we speak break out in all directions like stars, and throw quadruple brilliance over the narrative—a brilliance which a correct taste will at once declare unprofitably sacrificed at the shrine of the keenest interest of mere mystery.
The design of mystery, however, being once determined upon by an author, it becomes imperative, first, that no undue or inartistical means be employed to conceal the secret of the plot; and, secondly, that the
