“Maybe we’re being unfair with the guy, suspecting him at all,” Shep said.

As the words left his lips, he happened to glance out the port and saw Ben Spooner, who had been working on the Northern Cross, thrust out across the gulf empty-handed.

“Hey, look!” Shep cried. “Ben’s in a big hurry and he’s not carrying a crate across!” He seized Rock’s space suit. “Now there goes Judas right behind him and he’s empty-handed too!”

Rock felt his heart take a dive. “Shep, they must be going to do exactly what I feared!” He sprang into action. “Come on, we’ve got to get Hugh and Johnny!”

“They can’t maroon us in space!” Shep said, furious, as he tagged along behind Rock down the corridor. “It’s the same as murder!”

“They’re not even waiting to carry the rest of the ore across!” Rock said. “As soon as we find the fellows, we’ll get over to the Dog Star right away!”

Sparky, Ed, and Leo were already in the other ship. Rock and Shep quickly rounded up Johnny and Hugh and the four of them hustled toward the air lock, bumping into crates in their hurry. As they reached it, Johnny pointed out the open doorway.

“Look, Sparky’s coming over!” he said.

“Maybe he’s found out what’s going on,” Hugh spoke.

They gave Sparky a hand into the ship.