The scream of a hand-siren sounded from his stateroom. It rang over the ship. His signal! I heard it answered from some distant point. And then a shot; a commotion in the lower corridors....

The attack upon the Planetara had started!

I was on my feet. The shouts of startled passengers sounded, a turmoil beginning everywhere.

I stood momentarily transfixed. The door of Miko’s stateroom burst open. He stood there, with Moa, Rankin and George Prince crowding behind him.

He saw me. “You, Gregg Haljan!”

He came leaping at me.

CHAPTER XII

The Weightless Combat

I was taken wholly by surprise. There was an instant when I stood numbed, fumbling for a weapon at my belt, undecided whether to run or stand my ground. Miko was no more than twenty feet from me. He checked his forward rush. The light from an overhead tube was on him; I saw in his hand the cylinder projector of his paralyzing ray.