First, he’d thought of his uncle, the only adult Ethan considered intelligent. When it came to computers, Uncle Wayne was a pro. And, better yet, he worked for the state police, meaning that if Mrs. Sandra’s husband was doing something illegal, Uncle Wayne could arrest him for it, and Sandra’s husband would go away. This had been a very good idea, in Ethan’s mind. One of his better plans.

Except Sandra’s husband hadn’t gone away. Neither, for that matter, had Uncle Wayne. Suddenly, his uncle had developed an enduring interest in JV basketball. Every Thursday night, Uncle Wayne would appear at the school, and off he and Mrs. Sandra would go, leaving Ethan all alone with pesky Ree.

Ethan had started to be annoyed by Thursday nights. It didn’t take three months of weekly meetings to hack into someone’s computer. Heck, he could’ve done it in five minutes or less.

Then it had occurred to him: Maybe he didn’t need his uncle or state police involvement after all. Maybe all he needed to do was write some code. It was called a Trojan Horse. He could tuck it into an e-mail. He could send it to Mrs. Sandra. And the Trojan Horse would open up a gateway on her computer just for him.

He would have access.

He could see what Sandra’s husband was really up to.

He could save the day.

Except that Ethan had never actually written the code before. So first he had to study it. Then he had to test it. Then he had to revise it.

Three weeks ago, he’d been ready to launch. He wrote an innocent little e-mail to Mrs. Sandra containing some links he thought she might find helpful for her social studies class. Then he’d embedded the code and sat back to wait.

It took her two days to open the e-mail, which annoyed him a little. Weren’t teachers supposed to be more responsive than that?

But the Trojan Horse passed the gates, the computer virus embedding itself instantly into Mrs. Sandra’s hard drive. Ethan tested it on day three, and yeah, he had access to the Jones family computer. Now he could sit back and catch Mr. Jones in the act-literally

Ethan had been very excited. He was gonna be on 48 Hours Investigates. A whole episode on the boy genius who nabbed a notorious child predator. Leslie Stahl would interview him, social websites would want to hire him. He’d become a one-man Internet security alpha team. A modern-day website Marine.

The first three nights, Ethan had definitely learned some things about Mr. Jones. He’d learned, in fact, quite a lot about Mr. Jones. More than he really wanted to know.

What Ethan hadn’t counted on, however, was how much he’d also learn about Mrs. Sandra.

Now he was stuck. To rat out Mr. Jones, he’d have to also rat out Mrs. Sandra, and Uncle Wayne, too.

He knew too little, he knew too much.