Finley’s obsession with the falls began after her family vacationed there when she was ten, when her parents were still married. Afterward, she read every book she could get her hands on about Niagara Falls. She did a fifth-grade science fair project about hydroelectricity so she could build a model. And in middle school Finley wrote a persuasive paper arguing that Niagara Falls should replace Victoria Falls as one of the seven natural wonders of the world.

Even in high school, when her obsession had finally waned, Finley kept a framed photo on her bookshelf of her family wearing the translucent yellow tour ponchos, their hair flattened by the mist coming off the falls. Finley and Regan were happy little girls in the picture, but their parents wore the forced smiles of a couple who would be divorced a year later. Maybe Finley never noticed—or maybe she chose to ignore it—but Willa wonders if Finley loved Niagara Falls because it was the last vacation her family took together.

“I’ve never been there,” Willa says.

“I’m not going through the Welland Canal or sailing on Lake Ontario,” Taylor says. “So if you want to go to Niagara Falls, we’ll have to take a bus from Buffalo.”

“What if I want to sail Lake Ontario?”

“Then maybe you should have shown up sooner.”

Willa’s eyebrows arch. “It doesn’t matter when I showed up. I’m here now and it’s our trip. You don’t get to make all the decisions.”

Taylor moves to her side of the cabin, drops onto her bunk, opens a tattered copy of Outlander, and pointedly ignores Willa, who moves on to the next clue. ‘Time travel whenever possible.’ This one is so vague that it could refer to anything in any town along the way. She slips the list inside the Captain Norm book, as irritated with Finley as she is with Taylor, and feeling sad about both.

Willa steps into her flip-flops and walks down to the junior barn, where she and Finley spent hours hanging out on the battered old couch, drinking Gatorade and playing Uno with the other kids on the sailing team. Her chest aches as she thinks about how her life came full circle two summers ago, when she and Finley taught sailing to the kids from the Boys and Girls Clubs.

“I was one of you guys,” Willa told them at their first lesson. “The closest I’d ever been to a boat was seeing one out there sailing in the bay, but right here at this club, I discovered that anyone can learn how to sail.”