The circumstances suggested a couple of intriguing mysteries: Why did it take the public 17 months to detect the changes?

One of the most intriguing mysteries concerns the motivation behind the Soviet government's decision to launch the invasion.

The houses she passed were full of intriguing mystery.

In all, a captivating mystery too intriguing for its own good.

The work is exceptional and its origins an intriguing mystery.

There is an intriguing mystery and murder connected with the stepped all black Cornerstone.

How he accomplished it was an intriguing mystery to me.

But how the Mets will do it on the field in 1992 is a sizable, if intriguing, mystery.

A shame, really- I've always felt they were an intriguing mystery.

It was one of the more intriguing mysteries about them.