Which preposition to use with mistery

of Occurrences 3%

The Accomplisht Cook, the mistery of the whole art of Cookery, revealed in a more easie and perfect method then hath been publisht in any language:

to Occurrences 3%

and haint it a mistery to you that you are allowed to go unhung? Did you commit the NATHAN murder?

Which preposition to use with  mistery