"Have you found the Yellow Sign?"

When I moved my parents two months ago, my father gave me a box of brick-a-brac that contained two of these very small, yet curious lapel pins.

Either my father was a member of a secret society and my life is now measured in hours or somehow, I have found the Yellow Sign.

"a curious symbol or letter in gold. It was neither Arabic or Chinese, nor as I found afterwards did it belong to any human script". ~ Robert Chambers, The King in Yellow

And if the latter, my ending shall not be a pleasant one, for when one receives the Yellow Sign, the Phantom of Truth is summoned to claim it accompanied by the sound of creaking hearse wheels. I shall listen for it tonight.