The very emotional susceptibility which had made Helga Lund a great actress had also made her an easy victim of hypnotic suggestion, and if the process went on long enough, she would permanently lose everything that had made her successful.

Outright murder would have been innocent by comparison with such infernal ingenuity of torture. It seemed to Nick as if he were watching the destruction of a splendid priceless work of art.

He had seen enough.

He withdrew the little periscope from the keyhole and straightened up. One hand went to his pocket and came out with an automatic. Chick followed his example.

They were outnumbered two to one, but that did not deter them.

Helga must be rescued at once, and her tormentors caught red-handed.

CHAPTER IX.
THE SWING OF THE PENDULUM.

What was to be done, though?

To burst into the room and seek to overpower the four doctors then and there, in Helga’s presence, would place the actress in additional danger.

Nick was convinced, however, that that risk would have to be run. He had seen evidences that more than one of the men were tiring of the cruel sport, and it might now come to an end at any moment.