The Shadow, master mind opposed to crime, had shown his hand.

He had bigger game - the tracing of the master mind.

Master Mind is a motivational and support seminar program for business people.

It was not the policy of this master mind to remain dormant.

From within his own home, he acts as the master mind of this vast plot.

This master mind of international crime had gone to the fate that he deserved.

The master minds have gone back to the county seat.

The master mind, whoever he is, let his mob in for a mess tonight.

Behind this situation, the ways of X, like the master mind himself, remained an unknown quantity.

A master mind would have assured himself that one would he on hand.