He said: "Don't start us yet, San. I want to talk to you. I've been hurt—Turber shot me."

They stood with him in the middle of the room. For that instant the tower controls were neglected. Lentz held out his wounded hand for inspection. His other hand was behind him. It came up over his head. He struck with a dagger at San.

A swift blow, but Lea was quicker. She shoved at him. The blow missed, and San was upon him. And Lea leaped at him also, fighting desperately. They bore him down. His wounded hand was a handicap. The dagger was in his awkward left hand. San fought for it as they rolled on the floor with Lea bending over them.

A brief struggle. San twisted and got the dagger, stabbed with it. Lentz gave a shuddering cry and relaxed.

San climbed to his feet, white and shaken. Lea was trembling.

"Got him, Lea. Accursed traitor."

San's first thought was the controls. Lea stopped him.

"Wait! How do we know Alan is dead? A lie, perhaps, what Lentz told us."

They went to the windows. There was no one in sight. A groan from Lentz brought them back. He lay, gruesome on the floor, with the knife in him and a red stain widening. But he was not dead. Lea bent over him.

"Lea—I want to—tell you the truth."