The Shadow never failed; in that conviction, Harry held no reservations.

Such was the key that The Shadow had failed to use.

The Shadow, unlike the law, never failed when he took up the trail of those who had eluded him.

I can tell you only that The Shadow never fails those who work in his behalf.

But in a larger sense, The Shadow had failed.

With an unobstructed path ahead of him, The Shadow was failing.

Never before had Shadow failed to come when called.

But even in that instant of total surprise, The Shadow did not fail.

The Shadow has failed; but in failing he has won.

His proposal was one that The Shadow could hardly fail to accept.