Even as he finished, a terrific vibrating roar sounded from a distant point of the city. The sound trembled the walls of the building, shook the floor beneath their feet.

"The Phantom!" said Ga-Marr. "She struck!"

Faggard's face was livid. "You fool!" he snarled. "Do you realize what you've done?"

Standish betrayed no emotion. "Perfectly. I've divided your army in half. I've cut an aisle through your defense, through which my people even now are beginning to advance."

Abruptly the Earthman's teeth clicked together. "Now what have you done with Thalia and the Emperor. Tell me or...."

Faggard's shoulders slumped in defeat. He groped to his feet like a blind man and stumbled across the room. "I'll show you," he said huskily.

He open a connecting door, and Standish saw two familiar figures in the adjoining room, an older man and a young girl. But in that instant Faggard acted. He lunged across the room, reached up to a shelf filled with chemical tubes and vials. Seizing a bottle of colorless liquid, he threw it straight at Standish.

The bottle struck the door frame, and acid geysered in all directions. The Earthman felt a hot stab of agony lance across his left arm.

But Ga-Marr was not taken off guard. His genithode pistol exploded even as Faggard reached for a second bottle. The Sirian threw up his arms, staggered and pitched forward on his face.