They are the great mystery, these three men of the sea.

There was no great mystery as to what needed to be done.

There is no great mystery about how to do better.

Why they came back is, of course, the film's great mystery.

You've lost weight, though where from is a great mystery.

Why men don't have time to cook is an even greater mystery.

This remains a great mystery and many people have different stories as to what really happened.

But I also felt at the border of a great mystery.

I'm sure that in itself is one of God's great mysteries.

This is a great mystery, and may achieve our end.