This was the first definite break since the whole mysterious affair had started.

It seems a most mysterious affair, but that's not my business.

Her crime studies are subtle, mysterious affairs that never turn out quite the way you anticipate.

Nor could the soldiers give any more lucid explanation of the mysterious affair.

The totality of ourselves is a very mysterious affair.

"I mean it was a very mysterious affair."

The other belonged to the dining-room, which was the apartment in which the mysterious affair had occurred.

Not even they could make anything of the mysterious affair or adopt a consistent line of conduct towards their prisoner.

This is an indirect reference to The Mysterious Affair at Styles.

The Mysterious Affair at Styles was the result.