"Never mind. We can manage. The bomb is all set now. You take the lever that raises the turret shelter. I'll pull the switch on the catapult. I'll give the signal and we'll pull together."

"Okay," Gerald agreed. The beam of the flash moved off at a distance, then darted upward again to illuminate Marc's activities in the turret. "I'm ready!"

"Marc!" Toffee screamed. "Get away! They're firing the bomb!"

Marc glanced back at her, but didn't move. He seemed to be pulling frantically at the cable, almost as though he had somehow gotten caught on it.

"Ready!" Cecil yelled. "Aim...!"

"Marc!" Toffee screamed. "Marc! Marc!"

"Fire!"

In the dreadful flash that followed, Toffee couldn't be certain of what she saw. It seemed that Marc had darted away from the face of the turret, but she couldn't be sure. In the same moment there was a cry of terror from Gerald.

"It didn't open!" he screamed. "He jammed the cable!"

The tracks of the catapult gleamed red with friction, and the room was lighted with a dull glow. And then Toffee saw that the metal covering had remained secure, blocking the passage of the bomb. She had only a glimpse before the crash came.