Dr. Frank and I followed. I realized that we passed the deck door and window of A22. But they were dark, and evidently sealed on the inside. The dim lounge was in a turmoil; passengers standing at their cabin doors.

I shouted, "Go back to your rooms! We want order here—keep back!"

We came to the twin doors of A22 and A20. Both were closed. Dr. Frank was in advance of Snap and me now. He paused at the sound of Captain Carter's voice behind us.

"Was it from in there? Wait a moment!"

Carter dashed up. He had a large heat-ray projector in his hand. He shoved us aside. "Let me in first. Is the door sealed? Gregg, keep those passengers back!"

The door was not sealed. Carter burst into the room. I heard him gasp, "Good God!"

Snap and I shoved back three or four passengers. And in that instant Dr. Frank had been in the room and out again.

"There's been an accident! Get back, Gregg! Snap, help me keep the crowd away." He shoved me forcibly.

From within, Carter was shouting, "Keep them out! Where are you, Frank? Come back here! Send a flash for Balch!"

Dr. Frank went back into the room and banged the cabin door upon Snap and me. I was unarmed. Weapon in hand, Snap forced the panic-stricken passengers back to their rooms.