“Do you want me to ask him if he sleeps in those boxer briefs of his or au naturel, Mad?”

“Shhh!” Maddie tried to shush her. “And sit down. You’re rocking the boat!”

“Hey!” A huge smile lit Avery’s face. “Have you guys ever mooned anybody?” Avery plucked at the waistband of her capris. “We’ve even got an almost full moon. It’s perfect!”

“Oh, God. Somebody stop her!” Maddie flushed with irritation. Worse, she couldn’t see where she was headed through Avery, who was busy fumbling with her waistband.

“Avery,” Deirdre scolded lightly.

“Is that really the best you can do?” Maddie’s slight buzz had evaporated. “After all those mothering lessons I gave you? You have to talk like you mean it!”

“Avery!” Deirdre said. “Sit down and—”

“Whadda ya think, Nikki?” Avery’s feet were planted in the bow. She seemed to have given up on her zipper and was trying to pull the capris down without undoing them.

“I don’t think there’s an audience there to appreciate it. Not that I think your shiny white butt would faze Will or Roberto. Although it might melt Fred Strahlendorf’s pocket protector.”

Everyone but Maddie laughed. Avery still seemed undecided.

“Avery! Take your hands off your pants and sit down! I can’t see the . . .” Something metallic glinted on the island and her eyes shot up to the second story. Seconds later any thought of what William Hightower or anyone else might or might not be able to see or hear vanished.

The boat slowed of its own volition. Something, or rather several somethings, bumped beneath the hull. The boat ground to a halt.

Avery shrieked. Her arms windmilled. If Nicole hadn’t grabbed on to her shirt she might have gone overboard. Not that drowning was much of a risk. Several birds squawked and took flight. Those that remained blinked sleepily at them from where they stood. In water that barely covered their feet.

“Holy shit!” Nicole released Avery’s shirt from between her fingers. “What happened?”

Maddie looked around them, still trying to absorb where they were as opposed to where they should have been. “Given the fact that we’re not moving, we’re facing straight on to the beach at Mermaid Point, and the channel’s way over there”—Maddie pointed south—“I think we can safely deduce that we have run aground.”

“What do we do now?” Nicole pulled Avery down next to her.

Maddie turned off the motor and plopped back down on the bench seat. It was even quieter now with the motor off. Her head swam with the bits and pieces of information she’d gleaned on her one brief visit to the safe boating website Hudson had given her. “The only things I can remember are that we shouldn’t try to power off the flat because it’ll just dig us in deeper and that if a police boat sees us we could be fined thousands of dollars.” She commanded herself to remain calm.

“Well, at least we can see land.” Nicole peered around Avery, who was looking increasingly sober. “That should mean people on land can see us, too, right?”

Maddie looked around again, hoping to see running lights out in the channel or some sign of activity on Mermaid Point. “I don’t know. We have a good bit of moonlight, but I’m not sure anyone on land could pick us out from our surroundings. What time is it?”

Nicole looked down at her phone. “It’s almost one A.M. Why?”

“I remember Hudson saying that sometimes you just have to wait for high tide to help you float off the flat.”

“How long are we talking?” Deirdre asked.

Maddie thought for a minute. “I think there’s a site that has tide information on it. Salt . . . Salt Tides or something like that.”

Nicole applied her thumbs to her phone. “I’m Googling.”

Avery stared stupidly at her own phone. “Do we have any flares we can shoot in the air?”

Maddie opened the storage compartment beneath their seats, looked in the side storage wells, pawed through the life vests, and lifted all the cushions. “I don’t know!”

The only boat traffic was way out beyond Alligator Reef. “I feel like I’m on some deserted rural road with a flat tire.”

Avery began to hum “Dueling Banjos.” Maddie shot her a look.

“Sorry.” Avery’s thumbs moved on her phone. A strong pinpoint of light appeared. “My flashlight app.” She waved the beam of light back and forth, aiming it toward the island.

Maddie thought she saw a glint of something from the beach on Mermaid Point, but it was so brief she couldn’t be sure.

Avery added her voice. “S.O.S.! Stranded women! Help!” Her shouts hung in the night sky, skimmed over the dark water. No one and nothing responded.

“Can you do Morse code with that app?” Deirdre nodded to the pinprick of light coming from Avery’s phone.

“I’ll check.” Avery shut off the flashlight while she searched for the directions for sending a distress signal. “Does anybody have anything to write on?”

“None of us brought a purse,” Deirdre reminded her. “Just an ID and a credit card in our pocket.”

“That’s a relief,” Avery quipped. “At least when they find our bodies washed out to sea they’ll be able to identify us.”

“Very funny.” Deirdre’s voice was tight.

“I’ve got Saltwatertides.com.” Nicole stared down at her screen. “Let me just put in Islamorada.” Her thumbs moved again. Maddie watched her scroll down. “Here it is . . . damn.” She slumped in her seat. “High tide is at four twenty-two A.M.”

“Oh, good.” Deirdre’s tone was far drier than their surroundings. “Only a little over three hours from now.”

“And that’s assuming all we need is a higher tide. I think something might have happened to the motor.” Maddie wrapped her arms around the motor and tried once again to lift it. “It’s definitely stuck. I can’t even get it to budge.”

Avery had apparently given up on Morse code and was once again waving the pinpoint of light at the island. “Hey! Help! Over here!”

Nicole rolled her eyes. “Maybe someone should try to unstick the motor. Can’t we just get out and try to push the boat to deeper water?”

“We can try.” Maddie caught herself following Avery’s flashlight beam. Surely if anyone on Mermaid Point could see them they’d do something to help.

“I nominate Avery for chief pusher since her ridiculous desire to flash her butt got us in this mess,” Nicole said.

“But it’s dark and we don’t know what’s down there.” Deirdre looked from the ocean to Avery.

“Well, whatever it is can’t be very big. There’s not even a foot of water here.” Avery stood.

“I don’t want you to go in there alone,” Deirdre said. “You’ve been drinking and there could be some big drop-off or something.”

“Isn’t that what we’re hoping for?” Nicole caught Deirdre looking at her. “I’m not going in there without shoes and these are vintage Valentino.” She held up the bright red heels. A clump of sand fell out of one of them.

“I’m fine and I don’t need company. Here, hold the flashlight over the side so I can see.” Avery placed her phone in Deirdre’s hand and swung both legs over the side of the boat. For several seconds she stood taller than the boat. Then she appeared to slip. “I’m sinking!” She grabbed for the side of the boat, her arms flailing as she tried to get her balance. “It’s all mucky down here!” She bent as if feeling around for something. “Damn, one of my shoes came off. I can’t . . .” Head bent, Avery felt around some more. “It’s gone!”

Deirdre aimed the phone flashlight just behind Avery to try to illuminate the water. “Oh, my God! There’s a fin!” Deirdre dropped the phone and lunged forward to grab Avery’s hands.

“No, don’t . . . I’m . . .” Avery began.

Before she could finish or anyone else could move, Deirdre had yanked Avery halfway into the boat, where she teetered before landing in a heap at Deirdre’s feet. She lay in a pool of water she’d brought with her.

“I’m sure it’s just a nurse shark or a stingray I accidentally disturbed,” she finished.

“Does anyone have Will or Roberto’s phone number?” Nicole asked.

They all shook their heads. Avery sat up but remained in the bottom of the boat. Maddie had Hudson’s number but she wasn’t calling anyone. Fin sightings aside, they were in such shallow water and so close to Mermaid Point that she felt far more embarrassed than frightened.

“Maybe we should call the Coast Guard,” Nicole said.

Maddie demurred. “We’re not in serious danger. And I’m still hoping we can float off with the tide. I don’t think any of us have a spare couple of thousand to pay a fine.”

They all looked haggard, but no one disagreed.

“Maybe there’s a private towing service.” Nicole glanced down at her phone screen. “You know, like a nautical AAA.”

“Probably.” Avery removed the one shoe that remained on her foot. “But we don’t know if they’re twenty-four-hour. And chances are, middle-of-the-night calls are a lot more expensive than regular business hours.”

Maddie checked the time on her phone. “It’s after two A.M.”

Avery groaned. “The outdoor kitchen people will be there between six and seven because they wanted to finish installing in time to shoot the video. They’re bringing their own film crew with them. We have to be back before then.”

Maddie pulled the life vests out of the storage hold and began to distribute them.

“Are you worried that we’re going to capsize or end up in the ocean?” Deirdre asked as she took hers.

“No.” At the moment Maddie thought being swallowed up by the sea might be preferable to having to admit that she’d run aground the very first time she’d captained even so small a boat by herself. “We have enough of these for everyone to have one for a pillow.” She plumped the bright orange vest, which was way drier than her clothing. “If we’re going to be alert enough to take advantage of the tide when it comes back in, we should try to get at least an hour or two of shut-eye.”