They began arriving at the boathouse at Long Bluff a little before 7:30. When Adam rode up, he could make out a half-dozen bikes already there, parked in the dark along the boardwalk fence. It was cold — the wind was whipping off the river, bending trees, and making branches creak. Kids were huddled by the front door, bouncing up and down for warmth, waiting for Adam to let them in.

Getting a key had been no problem. Adam’s dad was on the civic association board, and Jennifer’s mom was one of the garden club women who planted the boathouse flower boxes. Adam had simply sneaked his father’s key off the hook in the kitchen.

He hid his bike in the bluff grass in case anyone came along the path at that hour, and passed the word that they should all do the same. It was a moonless night. He could see the house lights on the bank on the far side of the river; he could see the flashing green light of a buoy bobbing on the river. But he had trouble seeing anything right around him. As he moved across the bluff toward the boathouse, he stumbled frequently, scratching his hand on a thornbush. Little drops of blood beaded on his palm.

The lock was so rusted, he kept jiggling the key but it wouldn’t catch. “Come on, come on,” he kept urging, and finally there was a click. It was pitch-black inside. The windows were boarded up, the electricity was switched off, and there was no heat. They stationed a boy by the door to guide latecomers to the meeting.

Holding their flashlights, they walked down the hallway toward the big room overlooking the river. They moved in one large group, pressing together for reassurance. When one slipped, several of them bumped, startling everyone. The floorboards creaked with every step, and the wind whooshed through the gaps in the walls. Below they could hear the water lapping and crashing against the boathouse pillars. Once in a while a big swell would dash against the rocks on the shore’s edge, and then as it withdrew, there’d be a loud sucking noise that sounded like some awful river beast howling in pain.

The hallway walls were lined with black-and-white photos of past boathouse commodores. Danny had once joked to Adam that a civic association commodore was one rank below an army private, but Adam wasn’t laughing tonight. In every photo the commodores wore the same white sailing caps with anchors on the brims and navy blue coats with bunting on the shoulders. Under each portrait was the year they had been commodore. A lot were from the 1930s and 1940s. Staring out of the dark in the wobbly glow of flashlights, all of them smiling and yet so long-ago dead — it gave Adam the creeps.

The door to the big room was slightly ajar, and when Adam opened it all the way, something living tumbled down on them.

Whatever it was fell right past Adam’s face, brushing his coat. More kept falling. One bounced off a girl’s head. “I’m being attacked,” she shrieked. “Claws!”

They were screaming now, Adam’s heart was in his throat, and one of the typists yelled, “I want my mommy!”

But then the calmest, most matter-of-fact voice Adam had ever heard said, “Relax. Just a bunch of mice. Must have been eight or ten of them piled together for warmth on top of the door ledge. Nice safe place for a mouse. We startled them. Nothing to fear, folks.”

Adam’s jaw dropped. Phoebe! She went on to explain that one of her older brothers had trained mice to run through a maze for a science project, and she had learned to pick them up, discovering the truth about mice — they were fraidy cats.

“Now rats,” continued Phoebe, “that’s another matter. If anyone sees a rat tonight, I would immediately —”

“Phoebe, thanks for your help,” said Adam. “You were a calm voice in the storm. We’ve got to get down to business now. We don’t have much time. If we’re gone too long, our parents will know something’s up.”

“Adam,” said Phoebe, “you and Jennifer are our fearless leaders. We are with you one hundred percent. If you order us to jump, we will say, ‘How high, sir?’ If you tell us to ‘Charge!’ we’ll hand over our parents’ credit cards. If you say, ‘Duck!’ we’ll quack. The only thing I thought might be worth mentioning, sir — when I heard this afternoon that this was going to be the secret meeting place, I looked up river rats and rat bites — they can be quite serious, sir. If anyone —”

“PHOEBE!” yelled Adam. “STOP TALKING!”

“I can’t,” said Phoebe. “My mother says it’s a nervous reaction. When I get scared, I just talk and talk and —”

“Front-Page,” said Jennifer in a soothing voice, “come over here beside me. Come on.” The older girl put her arm around the younger girl, who immediately stopped babbling. It was like Jennifer had pulled out Phoebe’s plug. Adam could not believe how Jennifer figured out this kind of stuff.

They moved a bunch of the canvas chairs and wicker sofas into a circle. It was amazing. The entire Slash staff — all twenty-three — had made it. They were a hardy bunch, all right. Jennifer and Adam explained the Marris story as quickly as they could. They didn’t give all the details — just enough so everyone would understand why Marris would want to kill them and why they might not be able to print the Slash the usual way.

“This will all come out in the next few days,” said Jennifer. “If we do this right, everybody in Tremble will know. But until it happens, this has to be top secret. If Marris finds out, who knows what she’d do to us.”

“Top secret,” repeated Phoebe, “Tippity-top secret. The tippity-toppest. Very tippity . . .” Jennifer put her arm around her, rubbed her back a little, and Phoebe stopped.

Adam explained that they each had to put together a list of as many e-mail addresses of adults as they could. He assigned several to make calls Monday and get addresses for crucial grownups like school board members and elected officials.

A girl on the Spotlight Team suggested they could also get the story out by posting it at a website.

“There’s no time,” someone said.

“Yes, there is. That’s a great idea,” said Jennifer. “We don’t have to make a special Slash web page with all the bells and whistles. We can just take one of those ready-made web page forms that kids use to make sites for boyfriends and girlfriends.”

It was a terrific idea, but Adam didn’t feel terrific. How did Jennifer know about those lovey-dovey sites? Did she have some boyfriend she was making websites for? He had been so sure Jennifer wasn’t like that. Had she turned into that kind of girl when he wasn’t paying attention? It was frustrating; there was so much to keep track of. A heavy feeling filled his chest.

“I’ve never done it myself,” Jennifer continued, glancing toward Adam, who suddenly was beaming like a thousand flashlights. “It would be great if a typist . . .”

“I’ll do it,” said the girl who just minutes before had been calling for her mommy. That’s how things were going — the longer the meeting went on, the braver they felt.

Of course, there would be nothing for the Slash staff to e-mail to all those important grownups and nothing to post at a romance website until Adam finished writing the story. And Adam couldn’t finish until he and Jennifer interviewed Marris on Monday morning. He began calculating. Assuming they survived the interview — assuming Marris didn’t have them locked up in the county juvenile detention hall — Adam still had to work her comments into the story. Then he would have to type the article into the computer himself, and he was a painfully slow keyboarder. Then he would have to e-mail Jennifer the final draft so she could look it over, make changes, and e-mail it back to him.

It was going to be Monday night, maybe midnight, maybe later, by the time he was done and ready to forward the Marris story to everyone.

“OK, listen up,” he said. “Obviously if Marris has a reasonable explanation for what she did with the seventy-five thousand dollars, we’ll just write up a regular article and send an e-mail telling you to forget it. But if this goes like we think, by the time Jennifer and I finish writing and editing, it will be really late. And that’s going to be a problem.”

Everyone started talking at once. Several said they’d love to stay up all Monday night, and people began announcing their record for the latest they’d been awake at sleepovers.

“We think it would be a big mistake to do anything that would give your parents the idea that something’s up,” said Jennifer. “Even my mom — I love her a ton, but she’s in the PTA and they’re so tight with Marris. We don’t want to give Marris a clue how we’re getting this story out until it’s too late.”

Some said they had alarm clocks in their rooms or on their watches that they could set, and others suggested forwarding the story in the morning before they went to school, but Adam thought that was too risky. “I don’t know about you,” he said, “but when I set my alarm clock — the one who wakes up is my father.

“I’m going to tell you something I’ve never told anyone before,” Adam continued. “It’s my foolproof method for waking myself up in the middle of the night. I use it in the winter when it’s supposed to snow and I want to get up early to see if it really did, so I’ll know if we’re going to have a snow day.”

He paused. He was a little embarrassed to say it in front of girls and stalled, trying to think of the right words. When he finally told everybody, his voice was so soft, they had to lean forward and strain to hear. A little mouse in the corner of that boathouse trying to listen in would have missed it.

And then suddenly, as they all understood what it was, they laughed, they howled, they thought it hilarious, outrageous, brilliant in its simplicity. They were totally in love with, totally sold on Adam Canfield’s 100 percent guaranteed, foolproof middle-of-the-night wake-up system. They crushed in around him, they were so excited, and slapped him high-fives, pushed him affectionately, punched him in the shoulder. Sammy gave him a bear hug and lifted him off the ground.

When he came back down to earth, Adam said, “The only thing is, after you go, don’t flush the toilet. You don’t want to wake anybody.”