They swam toward the bell but had only covered half the distance when Sam reached out a halting hand to Remi’s arm. She had already stopped and was staring ahead. She’d seen what he’d seen.The bell had come to a stop at the lip of the precipice, with the waist, shoulder, and crown embedded in the sand and the sound ring and mouth jutting into empty space.

BACK ON THE SURFACE, they got their breath. Remi said, “It’s too big.”

“Too big for what? To move?”

“No, to belong to the Speaker .”

Sam considered this. “You’re right. I didn’t notice.”

The Speaker’s displacement was listed as four hundred fifty tons. According to standard measures for the era in question, her bell wouldn’t have weighed more than sixty pounds. Their bell was bigger than that.“Curiouser and curiouser,” Sam said. “Back to the boat. We need a plan.”

THEY WERE TEN FEET from the boat when they heard the rumble of diesel engines approaching from behind. They reached the ladder and turned around to see a Tanzanian coast guard gunboat a hundred yards away. Sam and Remi climbed onto the Andreyale’s afterdeck and shed their gear.“Smile and wave,” Sam murmured.

“Are we in trouble?” Remi whispered through her smile.

“Don’t know. We’ll soon find out.” Sam continued waving.

“I’ve heard Tanzanian jails are unpleasant.”

“Every jail is unpleasant. It’s all relative.”

Thirty feet away, the gunboat came about and drew parallel to them, bow to stern. Sam now saw it was an upgraded 1960s-era Chinese Yulin-class patrol boat. They saw Yulins several times on each of their trips, and Sam, ever interested, had done his homework: forty feet long, ten tons; three-shaft, two six-hundred-horsepower diesel engines; and a pair of twin 12.7mm deck guns fore and aft.

Two sailors in jungle fatigues stood on the afterdeck and two more on the forecastle. All bore shoulder-slung AK-47s. A tall black man in crisp whites, clearly the captain, stepped from the cabin and walked to the railing.“Ahoy,” he called. Unlike Sam and Remi’s previous encounters with the coast guard, this captain was grim-faced. No welcoming smile or pleasantries.

“Ahoy,” Sam replied.

“Routine safety check. We will board you now.”

“Be our guest.”

The gunboat’s engines gurgled, and the Yulin angled closer until its bow was ten feet away. The engines went back to idle, and the Yulin glided to a stop beside them. The sailors on the afterdeck tossed tire bumpers over the side, then reached down, grabbed the Andreyale’s railing, and pulled the boats together. The captain vaulted over the railing and landed catlike on the Andreyale’s afterdeck beside Sam and Remi.“You are flying the diver flag, I see,” he said.

“Doing a little snorkeling,” Sam replied.

“This boat is yours?” “No, a rental.”

“Your papers.”

“For the boat?”

“And diving certificates.”

Remi said, “I’ll get them,” then trotted down the steps into the cabin.

The captain asked Sam, “What is your purpose here?”

“On Zanzibar or here specifically?”

“Both, sir.”

“Just on vacation. This seemed like a nice spot. We were here yesterday.”

Remi returned with the documents and handed them to the captain, who first examined the rental agreement, then their diving certificates. He looked up and studied their faces. “You are Sam and Remi Fargo.”Sam nodded.

“The treasure hunters.”

Remi said, “For lack of a better term.”

“Are you hunting treasure on Zanzibar?”

Sam smiled. “That’s not why we came, but we try to keep our eyes open.” Over the captain’s shoulder, behind the tinted windows of the Yulin’s cabin, Sam saw a shadowed figure. It appeared to be staring at them.“Have your eyes seen anything on this visit?”

“A coin.”

“You are aware of Tanzanian law regarding these matters?”

Remi nodded. “We are.” From the Yulin, a knuckle rapped once on the window.

The captain looked over his shoulder, said to Sam and Remi, “Wait here,” then climbed back over the railing and stepped into the Yulin’s cabin. He reappeared a minute later and jumped back down.“The coin you have found-describe it.”

Without hesitation, Remi said, “Round, copper, about the size of a fifty-shilling piece. It’s badly pitted. We haven’t been able to make anything of it.”

“Do you have it with you?”

“No,” said Sam.

“And you say you are not hunting for any shipwrecks or specific treasure?”

“That’s correct.”

“Where are you staying on Zanzibar?”

Sam saw no point in lying. They would double-check the answer. “A bungalow on Kendwa Beach.”

The captain handed back their papers, then tipped his cap to them. “Good day.”

And then he was back over the rail and inside the Yulin’s cabin. The gunboat’s engines rumbled, the sailors pushed off, and the gunboat came about and steered west toward the channel. Sam took two long strides, ducked into the cabin, and reemerged with a pair of binoculars. He lifted them to his eyes and trained them on the Yulin. After twenty seconds, he lowered the binoculars.“What?” Remi asked.

“There was someone in the cabin giving orders.”

“The knock on the window?” Remi said. “Did you get a look at him?”

Sam nodded. “Not black and not in uniform. He looked Hispanic-maybe Mediterranean. Thin, hawk nose, thick eyebrows.”

“What kind of non-Tanzanian civilian would have the power to order about a coast guard gunboat and her crew?”

“Someone with deep pockets.” As much as they loved Tanzania and Zanzibar and their people, there was no arguing that corruption was common. The majority of Tanzanians made a few dollars a day; military personnel, only slightly more. “Let’s not get ahead of ourselves, though. Right now we don’t know anything. Just curious, Remi: Why’d you lie about the coin?”“Gut reaction,” Remi replied. “You think I should have-”

“No. I had the same instinct. The Tanzanian coast guard has two Yulin gunboats to cover the central coast, the main channel, and Zanzibar. I got the impression they were specifically looking for us.”“Me too.”

“And as safety checks go, that one was worthless. Didn’t ask about life preservers, the radio, or our dive gear.”

“And when was the last time we met a Tanzanian official that wasn’t all smiles and geniality?”

“Never,” Sam replied. “About the Adelise coin-”

Remi unzipped the side pocket of her dive shorts, withdrew the coin, and held it up with a smile.

“That’s my girl,” Sam said.

“You think they’ll search the bungalow?”

Sam shrugged.

“So, put it all together and what’s it mean?” Remi pondered.

“No idea, but we’re going to watch our step from here on out.”

ZANZIBAR

FOR THE NEXT HOUR THEY SAT ON THE AFTERDECK , SIPPING ICE-COLD water and enjoying the gentle rocking of the Andreyale and listening to the waves lapping at the hull. Within the first thirty minutes of the Yulin’s departure, it appeared twice more, a mile out, cruising first north to south, then south to north. It had not returned.“Can’t help but worry the bell’s tumbled over the edge,” Remi said. “I can see it in my mind’s eye.”

“Me too, but I’d rather risk that than have them come back while we’re in the middle of raising it. Let’s give it another twenty minutes. Worst case, we can probably still get to it.”

“True, but at a hundred fifty feet, things start getting dicey. Getting down there wouldn’t be so hard. Finding it might be.” As massive as the bell was, after bouncing down a hundred-fifty-foot slope it could end up almost anywhere, like a dropped child’s marble that’s lost in the dining room but ends up under the refrigerator in the kitchen. “And once we find it, getting it up to the surface is a different can of worms altogether. Better dive gear, compressor, lift bags, winch . . .”

Sam was nodding. There would be no chance of hiding that level of activity from curious or prying eyes. Simply renting the equipment in Stone Town-even anonymously-would set the rumor mill in motion. By day’s end there would be onlookers both on the shoreline and in boats offshore-including, perhaps, the Yulin gunboat and her mysterious passenger.“Let’s hope it doesn’t come to that,” he said.