The antidote.

Once upon a midnight,

in the castle protected by the strongest of knights,

the angel of death came to visit the ancient king whilst he slept.

"Sir, I command thee to awaken. I have come, for thou hast owed me a debt."

"Oh, Angel of death...what dost thou desire from me?

Do not harm me, I beg thee!"

"Thou longest for the antidote to life, dost thou not?"

"Just as thou sayest, I do, my lord."

"I have come to offer it to you, the antidote for all the problems thou art facing."

The king widened his eyes but watched the angel warily, staring.

The angel of death thus stretched out his boney fingers and gave the king a bottle.

"What is this, O gracious angel?"

"' Tis Mercury, a rare substance, that will cure all of thy trouble."

Greedily, the king drank down the antidote.

And the Angel of Death carried the healed man to the Underworld.

And redeemed his soul.