“I wonder what that can be.” Mrs. Ellington’s eyes brighten as if a visit from the island maintenance crew is cause for excitement. “The hydrangeas aren’t due to be pruned and we had the lawn mowed only yesterday. Do let’s go see.”

Though her back is as straight as ever, her gait is so wobbly, despite the steadying cane, that I waver behind her, trying to be on both sides at once to break her inevitable fall.

“Hullo?” the voice calls again, slightly louder. More recognizable.

“Com-i-ng!” sings out Mrs. Ellington. “Do come in! My progress is gradual, but we will be there in good time!”

I wish her progress were nonexistent, because far too quickly we reach the kitchen, where, yes, Cass is standing, looking particularly tan against the dainty ruffles of the sheer white curtains.

“My dear boy!” Mrs. Ellington says.

How has he managed to be her dear boy after just one day spent mowing her lawn? Does she remember him from that one summer? Old Mrs. P. didn’t.

“Gwen, dear. This is Cassidy Somers, who will be keeping the island beautiful for us this summer. Cassidy, this is my new”—she hesitates, and then continues firmly—“this is Guinevere Castle.”

I wince. Concussion or not, Mrs. E. recalls my whole, real, hopelessly romance-novel name. Which I never use at school. Or anywhere. Ever.

Unfazed, Cass extends his palm cheerfully. “Hello again, Gwen.”

I ignore his outstretched hand. “We’ve met,” I say, turning quickly to Mrs. Ellington. “We know each other. Um, not that well. That is, we’re not friends. I mean . . . We don’t have that much in common . . . Or know each other at all, really. We just . . . we go to high school together.” I conclude these ravings, not looking at Cass, and wait miserably for Mrs. Ellington to decide I’m a lunatic.

Instead, she smiles gently at me. “Schoolmates. How lovely. Well, then, I do believe our gentleman caller could benefit from some of our iced tea. Will you do the honors, Gwen?”

I nod, opening the freezer to scoop out the ice and, with luck, cool my blazing face. Grateful I don’t have to mess with all the silverware, I pour tea into an iced tumbler and hand it to him, trying to avoid any contact with his fingers. Which means that the sweaty glass nearly crashes to the ground. Good thing Cass has fast reflexes.

Mrs. Ellington flutters next to him, apologizing for not asking if he takes lemon and sugar.

“No, just as it pours is great. Thanks.”

“It is terribly easy to become parched in this heat,” Mrs. Ellington says, “particularly when in the throes of physical exertion. You must feel free to come by my house at any time to get something tall and cool.”

Cocking his head at her, Cass gives her his best smile. “Thank you.”

He chugs the iced tea. I watch the long line of his throat, look away, wipe my fingers on my cut-offs. My palms are actually damp. Fantastic.

“Perhaps a refill for him, Gwen? Now, dear boy, why are you here? If it is in regard to the bills, those all go to my son Henry.”

“It’s not that,” Cass says swiftly. “I’m here to boil your lobsters.”

My head whips around sharply.

“We’ve been looking to expand our list of services,” he continues, calm and reasonable. “Competitive times and all that.” His eyes cut to mine and then away again.

“Really?” Mrs. Ellington moves closer, as though he’s a magnet with an irresistible pull. “How so?”

“Well . . . um, seems as though the yard boy usually just mows and weeds. And”—Cass takes a long slug of iced tea—“I think . . . there’s room for more. Dog walking. Grocery runs. Um . . .” He looks up briefly at the ceiling as though reading words off it. “Swimming lessons.”

“Enterprising!” Mrs. Ellington exclaims.

Cass tosses her another smile, and then continues. “When I saw Gwen here heading over with your, uh, dinner, I thought it might be a good time to show you my technique.”

“You have a technique?” Mrs. Ellington clasps her hands under her chin, a happy child at a birthday party. “How accomplished! I wasn’t aware there was any such thing with regard to lobsters.”

“Technique might not be the right word,” Cass says. “Where’s your lobster pot?” He asks this with total assurance, like every kitchen in New England has such a thing. But yes, Mrs. Ellington does, the exact same huge, spattered black-and-white enamelware one we have at home. He pulls it out of the cabinet she opened for him and takes it to the sink, totally at home, practically toeing off his shoes and kicking back on the couch.

“You know,” I say, struggling to keep my voice level, “I can do this. You don’t need to—”

“Sure you can, Gwen. But I’m here.”

I think my eyes actually bug out. Him being here is exactly the problem. But this is still sort of a job interview; it’s not like I can arm-wrestle him for the lobsters.

He fills the pot with cold water and sets it on the stove, turning the gas up high, talking rapidly all the while. “Technique implies finesse—or skill. This isn’t really that. It’s just . . .” He fiddles with the knob, concentrating on lowering the flame. “Some people get bothered by the idea of cooking something alive, you know. Plus, lobsters can make that screaming sound—I’ve heard it doesn’t really mean anything, and their nervous systems aren’t well-developed enough to feel pain—their brains are the size of a ballpoint pen tip, but . . . it can still bother some people.”

Oh, yes, thanks for rescuing me, Cass. I’m just so squeamish.

I don’t want to kill lobsters. But I can.

“Indeed,” Mrs. Ellington says. “I always made a point of leaving the kitchen when Cook boiled lobsters. Or chopped the heads off fish.” She shudders reminiscently.

Cass flashes that melting smile at her again. All charm—the kind that pulls you in as surely as a hand in yours, and can hold you back just as firmly, leaving you wondering which is real, which Cass is true. As I think this, he glances over at me, straight into my eyes this time, and I’m taken aback by the expression in his. Readable for once, not guarded the way it’s been since March.

Direct.

Deliberate.

Challenging.

I turn away, open the refrigerator, take out the bag of lobsters, pulling it close to my chest. He reaches for it and I hold on tighter. He pulls, gently, looking at me quizzically to see if I really will challenge him for possession of a bag of shellfish.

I let go.

“Thanks, Gwen.” His voice is casual. “So, yeah, some people put the lobsters in the freezer for a while to numb them out. But that doesn’t seem all that much more humane than the heat, does it?”

He disentangles Grandpa Ben’s rope-mesh sack and sets the wrinkled brown paper bag that was inside it on the table. One huge claw immediately gropes out, clunking on the wooden island. Despite a stint in the Sub-Zero, Lobster A has not lost its mighty will-to-live.

“They say,” Cass continues, dipping his hand into the bag, “that if you kill the lobster too far ahead of time, it gets all tough and then it’s no good for eating.”

He twists Lobster A right and left to avoid its clinging claws. “Look away, Gwen.”

I’m not used to the note of command in that laid-back voice and instantly fix my gaze out the window on the beach plum’s fuchsia blossoms, then shake myself. “I can handle this,” I repeat to Cass. Then, trying to sound brisk and casual: “It’s in my blood, remember?”

“There,” he says, ignoring me. “Just a quick knife to the brain and then into the very hot water. No time to feel a thing.”

Mrs. Ellington claps her hands. “That does relieve my mind. It seems to work. No waving claws. None of that awful sound.”

“I’m done now, Gwen. You can look.” It’s an aside. Quiet, not mocking.

“I am looking,” I mutter, feeling suddenly adrift.

“These guys are, what, one-and-a-half-pounders? So fourteen minutes or so.” He reaches for the egg-shaped timer on the stovetop, deftly twists it. “I can stay and take ’em out if you like.”

I clear my throat. “You can go. I’m fine. I’ll take it from here.”

“You are a marvel, young man!” says Mrs. Ellington. “I am delighted by Seashell Services’ new policy. Dare I hope you also clean fish?”

“I do whatever needs doing.” Cass flicks me a quick glance, then grins at her again, that wide, slightly lopsided smile that creases the corners of his eyes. “Thanks for the iced tea. It was the best I’ve ever had. See you later, Mrs. Ellington.”

He crumples the soggy brown lobster bag and tosses it to the trash can. It bounces off the side. Without looking at us, he scoops it up, drops it directly in, then turns down the hall.

His “Bye Gwen” is so quiet it’s barely a whisper. But I hear it.

“What a kind young man,” Mrs. Ellington says. “Handsome too.”

I examine the lobsters bobbling in the water, now vivid red and motionless, and stare at the ticking timer. With ten minutes to go, I pour Mrs. Ellington more tea and start on Grandpa Ben’s sauce. She watches, bright-eyed and interested, murmuring occasional comments. “Oh yes, of course. How could I have forgotten the sour cream? Dear Ben Cruz had this down to a science.”

I’ll have to ask Grandpa Ben how it is that Mrs. Ellington knows his secret recipe for lobster salad. Sauce finished, I dump the rosy lobsters into a colander, running cold water over them and hoping it’ll cool me down too. I feel weirdly off balance.

“These will be perfect for lunch tomorrow,” I tell Mrs. E. over my shoulder, trying to sound breezy. “Unless you want them for dinner tonight, in which case I can make a butter sauce. Or hollandaise.”