What really went on in some of the most opaque transactions with insiders ever seen?

Book II is usually considered the book's most opaque section, and hence the most difficult to synopsize.

I rewarded Onuava with my most opaque smile.

And always those secrets that badly need penetrating prove the most opaque.

"Paradise Hotel" isn't subtle, even at its most opaque.

Already, this affair has become one of the most opaque and dubious money and embezzlement schemes in the public eye.

N'Halian wore his most opaque expression, but she was usually able to read some indication of his mood.

Unfortunately, North Korea's government remains one of the world's most opaque and unpredictable.

How was it, he wondered, that your own nature was the most opaque?

He drives the fastest cars and wears the most opaque sunglasses.