As if he knew I was thinking about him, Ned looked over at us and waved. I waved back, even though I knew it was not me he was greeting.

“Can I go over to where Mitzi and Pam are?” Isabel asked.

“May I please,” Mom said.

“May I please?”

“Of course. Do you want a glass of lemonade before you go?”

“No, thanks.” Isabel was already on her way, her radio and towel in her arms, and I wondered if our mother realized Ned was over there. I watched my sister’s long legs as she strode through the sand to where the throng of teenagers were tanning themselves, radios blaring, around the lifeguard stand. God, I wanted to be Isabel! I wanted to know how to use a tampon and have those long legs and fully formed breasts. I wanted boys’ heads to turn when I walked past them, the way their heads were turning toward Isabel now. I watched the group of kids greet her. Pamela Durant sat up, tugging at a strap of her bathing suit top that had slipped down her shoulder. She grinned at Isabel, patting the blanket next to her, and Isabel sat down. It was an attractive group of teenagers. There were about ten of them, all long limbs and breasts and bare chests, wavy hair shining in the sunlight and bodies glistening with iodine-tinted baby oil. Most of them were smoking, but I didn’t think Izzy had ever had a cigarette.

I knew a few of Isabel’s friends because she’d belonged to this group for the past couple of years. Mitzi Caruso was the nicest of the girls, but also the shyest and the least attractive. She had black hair that stayed frizzy all summer long and she was on the chubby side. Pamela Durant was gorgeous, maybe even prettier than my sister. She wore her light blond hair in a long ponytail on the side of her head, and she reminded me of Cricket, that character Connie Stevens played on Hawaiian Eye. The only other boy I knew was Bruno Walker, Ned’s best friend. His real name was Bruce, but only the adults called him that, and he wore his black hair in a ducktail. He had green eyes and pouty lips and his body was big and muscular. I’d heard Isabel and Pam talking one time about how he looked like Elvis Presley. They said he was wild: He rode on the hood of some kid’s car once and he drank too much. He was good-looking, but he didn’t interest me the way Ned did.

I saw Ned glance in our direction from his perch on the lifeguard stand, then jump down to the sand and walk the few steps to where Isabel was sitting. He put his hand on her shoulder, and my belly started turning flip-flops again as he leaned down to whisper something in her ear. She laughed, reaching up to give a playful tug on the black whistle hanging around his neck.

You’re supposed to be guarding the water, I said to myself. I lay down on the blanket on my stomach, turning my head away from them and closing my eyes. I was jealous, pure and simple.

I knew something about Isabel and Ned no one else did, something I could hold over my sister if I ever had that need. The day before, she and I had been reading on the porch while Mom sketched something at her easel. It looked as if she was getting ready to paint the rooster man’s shack on the other side of the canal. I wondered if she knew who lived there, but I didn’t dare tell her about my visit with him. Isabel suddenly looked up from her book.

“Can I go for a ride in Ned’s boat today?” she asked.

I waited for Mom to come back with her usual May I please, but instead she simply looked across the canal as though deep in thought. Then she nodded. “If either Ethan or Julie goes with you, then yes, you can go.”

I was thrilled! I couldn’t wait for a ride in the Chapmans’ Boston Whaler. I hoped we could ski. But Isabel was having none of it.

“Really, Mother,” she said, closing her book and getting to her feet, “that’s ridiculous.”

She walked into the house and Mom called after her, “Remember, you’re supposed to look for a job this summer.”

Mom began working on her sketch again as though nothing had happened, and disappointed, I returned to The Secret in the Old Attic. Later that day, I walked to the beach by myself and as I passed the little marina at the end of the canal, I saw Isabel standing on the bulkhead staring out at the water. I called to her, but she didn’t seem to hear me. Then I saw Ned pull his boat up tight against the bulkhead. He reached out a hand and Isabel climbed in.

I stopped walking, my mouth hanging open. I couldn’t believe she would so completely disregard our mother’s rules. I watched with envy as the boat picked up speed and raced out of the marina, and I tucked that image away for some day when I might need it.

“Come on, Lucy,” Mom said now. “Let’s go in the water.” I opened my eyes to see that she’d arranged the sandwiches and thermos, suntan lotion and her book, all in a row along one side of the blanket. Now she was ready to swim.

“I’m reading,” Lucy said. She was out of my line of sight, but I was certain she had not lifted her eyes from her book.

I saw Mom kneel down in front of her. “It’s a new summer, Lucy,” she said. “You’re eight now. It’s really silly to still be afraid of the water.”

Lucy didn’t respond.

“Chicken,” I said, closing my eyes again.

“Shh!” Mom said to me. “That’s not going to help.”

“Go in the water, Lucy.” I sat up, feeling guilty. I didn’t want to be a nasty older sister. I knew how that felt. “Then later I’ll go on the swings with you.”

With a sigh too heavy for an eight-year-old, Lucy got to her feet. My mother pulled on her own bathing cap, tucking her dark, wavy chin-length hair up inside it. Then she helped Lucy pull hers over her short permed curls, as though my sister might actually go into water deep enough to get her hair wet. I watched as the two of them walked toward the roped-off section of the water, holding hands. Mom pointed to a plane that was flying above the water, trailing a Coppertone banner behind it. As I’d figured, Lucy went in up to her knees and refused to go any farther. I couldn’t hear their conversation, but I could tell that my mother spent much of it coercing and Lucy spent much of it shaking her head no. Finally giving up, my mother walked into the water by herself. I watched her dive in once she’d reached the deeper water. She swam underwater to escape from the roped area, then began swimming parallel to the shore with long, fluid strokes. She looked beautiful, like a sea creature instead of a woman. I longed to be out there with her. She’d taught me to swim when I was half Lucy’s age.

I looked at my younger sister. She was still standing in the knee-high water, her yellow ruffly bathing suit dry, the pathetic Flintstones tube around her waist as she watched our mother swim. Suddenly I felt so sorry for her that I thought I might cry.

“Lucy, honey,” I called, the endearment slipping from my mouth before I could stop it.

She turned to look at me.

“Come back to the blanket,” I said.

She did. She trudged back to the blanket, pulled off the bathing cap, shimmied out of her tube and sat down next to me to read.

“Lay down and I’ll put some suntan lotion on you,” I said.

Mom had already coated her with it, but I just wanted to do something nice for her. She lay down on her stomach, and I rubbed the coconut-scented lotion on her back. I felt her shoulder blades, pointy beneath my palms. She seemed so fragile. I wanted to bend over and hug her. I wished I could give her just an ounce of my courage. I had more than I could manage.

I was putting the lid back on the tube when I realized Mr. and Mrs. Chapman were now on the beach directly behind us. They were sitting on striped, legless beach chairs, and Mrs. Chapman had her head tilted back, her eyes closed, face held toward the sun. She had pretty blond hair, cut short in a cap around her head. Mr. Chapman was reading a book, but he must have sensed me looking at him, because he took off his sunglasses and I could see him returning my gaze. He did not look happy to see me.

“Oh,” he said. “Hello, Lucy.”

“I’m Julie,” I said.

“Julie, of course.”

I looked toward the sea grass where I’d seen Ethan lying down, but he was no longer there. Then I spotted him sitting on the pier, holding one end of a string that disappeared below the water’s surface. He was probably crabbing. If I could still stand him, I would have enjoyed doing that with him.

“Has Charles…has your father gone back to Westfield for the week?” Mr. Chapman asked me.

I nodded. “Don’t you have to go home during the week, too?” I asked.

He shook his head. “Not since I’ve been on the Supreme Court,” he said. “We break for the summer.”

I was confused. I’d had no idea Mr. Chapman was on the Supreme Court. “Why did you outlaw school prayer?” I said, taking up my father’s fight.

“What?” He looked puzzled, then he laughed. His features were softer when he laughed and I could see some of Ned’s good looks in him. “That’s the United States Supreme Court,” he said. “I’m chief justice of the New Jersey Supreme Court.”

“Oh.” I felt embarrassed, as though this was something I should have known.

“I would have outlawed school prayer, though,” he added, “had I been in the position to do so.”

I suddenly understood why my father didn’t seem to like Mr. Chapman. I couldn’t remember ever seeing them talk to each other.

“Don’t start, Ross.” Mrs. Chapman didn’t move her head from her sunbathing, but she smiled as she chastised her husband.

“I think there should be a prayer to start the day in school,” I said, feeling immensely adult and grateful for my father’s guidance.

Mr. Chapman leaned forward. His eyes were the color of my mother’s pewter coffeepot. “It’s wonderful that you’re taking a stand, Julie,” he said. “It’s important to get involved, no matter what side you’re on. But I happen to disagree with you. In this country, we don’t only have Christians. We have Jews and Muslims and atheists. Do you honestly think those children should have to say a Christian prayer in school every morning?”