Forever Begins Tomorrow by Bruce Coville

do?”
    â€œWe keep going,” said Roger. “Only we do it with a little more intelligence than I started out with. We can’t afford to pass up the chance that this might be for real.”
    â€œWe can’t afford to get our butts caught in another trap, either,” responded Hap. “Frankly I’m a little tired of risking my life for the general good and not getting any thanks for it.”
    â€œNot your life,” said Roger. “Mine. Our friend was specific—only one person goes in. And since I was stupid enough to be planning on it anyway, I should be the one to take the risk.”
    â€œNow wait a minute,” said Hap. “You don’t think we’re going to let you go in there alone, do you?”
    Roger smiled. “You don’t have much choice. The safest way to do this is for the two of you to stay outside to cover me. If something breaks loose, try to get me out. If I don’t come back in a reasonable amount of time, one of you go for reinforcements.”
    â€œRoger!” said Rachel.
    â€œYeah?”
    Rachel looked into her brother’s eyes, then shrugged. She knew him well enough not to bother trying to talk him out of this. She knew, too, that in his place she would do the same thing. It was one of the shared traits of their twinhood: Given a choice between caution and curiosity, they went for curiosity every time. If they had even the slightest chance of learning Black Glove’s name, there was no way they were going to pass it up, not even if it meant real danger—or even worse, that they would miss the satisfaction of solving the puzzle.
    â€œYeah?” repeated Roger.
    Rachel smiled at him. “Have fun.”
    And then they were off again.
    The three youngsters crouched in the shadow of a scrub pine. About fifteen yards ahead of them, along a path mottled with moonlight and darkness, lay the entrance to the warehouse.
    â€œDo you have a control panel with you?” whispered Hap.
    â€œRight here,” said Roger, patting his shirt pocket. Ever since he had learned to use the override device Wendy had designed to let them control the island’s ferocious security robots, he had made it a point never to go out without one.
    â€œI wonder if our mysterious friend is aware of those robots,” said Rachel.
    â€œI would expect so,” said Roger. “It doesn’t seem like there’s much that goes on around here that he or she is not aware of. But our friend may also be planning on me putting it out of commission.”
    â€œWe have to do everything!” said Hap.
    It was hard to tell if he was disgusted, amused, or both.
    â€œI think do is the operative word here,” said Roger. “As in, I’d better get doing—which in this case means get moving.”
    With that he slipped away from them as silently as a bubble on a breeze.
    Hap smiled in approval. He remembered how clumsy Roger had been at tailing people when they first met. They had spent a lot of time together to work on that skill since then. It was clear to Hap that his training efforts had not been wasted.
    The same thought crossed Roger’s mind as he moved from shadow to shadow, looking for any sign of danger. Yet even though his senses were hyper-alert, he had found nothing to indicate a trap by the time he reached the building.
    Moving cautiously, he tried the door.
    Locked, as he expected.
    That was no real problem. The doors were sealed with a lock that was opened by a pushbutton pad located on the wall just to the left of the knob. You needed to know the combination to get in, of course. Either that, or you needed an electronic key like the one the Gamma Ray had developed with his father’s help. (Roger often wondered if Dr. Gammand had any idea as to what kind of uses his son put the little “science projects” they worked on together.)
    After taking the device from his pocket, Roger placed the cup-shaped sensor