The general was helpless until he knew the final secret.

I hope The hour is handy to explain The final secret.

I told him all but the final secret.

Duty had kept her going this long; I wondered if she would pass on one final secret, and then be ready to die.

He knew it was too early to play his ace, the one final secret he had kept safe for the last thirty years.

He narrated it like an initiate communicating the final secret.

"Then it is time that we explained to you the final secret."

At the very end, it is revealed that her night life was only being used to support her final secret: her young baby girl.

But he hadn't progressed to adept status; the, final secrets had not been revealed to him.

He had probed Loki's stronghold almost to its final secret, and his success seemed to present him with only another problem.