His death was an absolute mystery and likely to remain so.

God is only approached asymptotically, in the mode of what Rahner calls "absolute mystery."

You know, fmance is an absolute mystery to me.

"She remains an absolute mystery to me," the director admitted.

It was an absolute mystery to him, one which he needed to solve.

It is, to me, a complete and absolute mystery.

How and where it had been outfitted with its death device, was an absolute mystery.

It was an absolute mystery why he took up position close by.

How the church authorities think that this is enough time to appreciate the magnificent frescoes on show is an absolute mystery.

"As long as his identity is an absolute mystery, all the odds are on his side."