The calm grey eyes met her sharp inquisitive glance, but were utterly unrevealing.
"The Mystery of a Turkish Bath"
E.M. Gollan (AKA Rita)
The face of the American Indian is said to be unrevealing-to be a stoic mask under which his emotions are ever hidden.
"Somewhere in Red Gap"
Harry Leon Wilson
As for Kennedy, his face was unrevealing.
"The Film Mystery"
Arthur B. Reeve