Once again Garry agreed, but, as he was reaching for the button to open the door, he heard a click.

“What was that?” Patch asked in alarm. “What did you do?”

“Nothing,” Garry said. “Something was operating all by itself.”

A soft purring sound began to be heard inside the craft, and Garry felt the little ship vibrating ever so softly.

“Patch,” Garry said tensely, “I don’t like this.” He tried the door button, but it would not work.

“What’s happening?” Patch asked, and there was fright in his voice.

A movement outside in the dock caught the boys’ eyes. Through the wide front port of the ship, they watched a big door slide open, revealing a dark air-lock tunnel—a tunnel large enough to hold the craft which they were occupying!

“Garry,” Patch repeated, “what’s happening!”

Garry slumped into one of the seats, fear numbing his heart.

“Now I know what kind of ship this is, Patch,” he murmured. “It’s remote controlled, guided by an operator inside the space station. We’re heading straight out into space, Patch!”