They were now in the possession of a master criminal.

But a master criminal had not calculated on attack from the air.

He didn't seem to want to drop the subject of the master criminal.

There's got to be a head, of course, but I don't believe in a master criminal.

I can always resume my career as a master criminal.

The way to attack a master criminal was now open.

The way was clear for a direct meeting with the master criminal.

This was but one evidence of the master criminal's craft.

Only two remained alive, and one was the master criminal.

The Shadow knew the real identity of the master criminal.