It was March 6, 1765, and eleven-year-old Andrew was riding a slow old pack horse named Biscuit. In front of him stretched a long line of horses—eighty of them, nose to tail—winding along Forbes Road through the cold Pennsylvania woods. At the very front of the line walked Biscuit's big brother, a horse named Captain, who wore a brass bell around his neck.
CLANG. CLANG. CLANG.
Andrew worked for a famous trader named George Croghan, and this was his first big trip on a pack train. His job was simple: keep the horses moving and listen for the bell. If the bell stopped, that meant trouble.
The bell had been clanging for three straight hours. Then—
It stopped.
Andrew sat up straight in the saddle. "Biscuit. Why'd the bell stop?"
Biscuit snorted.
"HOLD WHERE YOU ARE!" boomed a voice from the woods up ahead.
Andrew's eyes went huge. Men were stepping out from behind the trees on both sides of the road—maybe thirty of them. They carried muskets and long rifles. Their faces were black, but not dirty—painted black with soot from a fire, so nobody would recognize them later. Andrew had heard about these men. The whole frontier had. They called themselves the Black Boys.
A tall man with sharp eyes walked calmly to the front of the train. "My name is James Smith. Steady on, lads. Nobody is going to be hurt today. But these goods are stopping right here."
Mr. Croghan came hurrying back from the front. "James Smith! You can't do this! These are the King's supplies! I have papers from the governor!"
"I don't care about your papers, Mr. Croghan. There are war goods on these horses. Rifles. Gunpowder. Tomahawks. Rum. You're hauling weapons west during Pontiac's War, and the King's own Proclamation says you can't. Some of those weapons could end up in the hands of folks who would use them against settler families like mine."
Mr. Croghan went red. "You won't find a single illegal item on those horses! I checked every load myself!"
"Then you won't mind if WE check." James Smith turned to his men. "Search every horse. Every barrel. Every sack."
Andrew swallowed hard. He wasn't actually scared anymore—James Smith hadn't pointed his rifle at anyone, and his men were calm and orderly. But Andrew was watching his boss VERY closely now. Because Mr. Croghan had said he checked every load. And Mr. Croghan was sweating in the cold March air.
While the Black Boys started working their way down the line, Andrew slid quietly off Biscuit and started walking up the row of pack horses, pretending to check straps. There were eighty horses. The smugglers' goods could be on any of them. Or none of them.
But Andrew had something the Black Boys didn't. Andrew had loaded most of these horses himself yesterday morning, and he KNEW what was supposed to be on each one.
He passed horse number one. Salt pork. Right where he'd put it.
Horse number two. Iron tools.
Horse number three. Trade beads, blankets, kettles.
Horse number four. Three barrels marked FLOUR.
Andrew stopped walking. He stared at horse number four for a long moment. Something was wrong. He just couldn't put his finger on it yet.
He moved closer and looked at the barrels. The first thing he noticed was that horse number four was sweating. Heavy sweat. The horse was breathing hard, even though they had only been walking. Why? Because the load on his back was too heavy for flour.
Three barrels of flour weighed about a hundred and fifty pounds. Biscuit could carry that all day. But this horse looked exhausted, like he was carrying twice as much.
Then Andrew noticed the second clue. One of the "flour" barrels had a long dark stain running down its side, soaked into the wood. Flour doesn't stain anything. Whatever was inside that barrel was a liquid—and it had leaked.
Andrew leaned in and gave the leaky barrel a small sniff.
RUM. Sharp and sweet, exactly like what his uncle made at home. That barrel was full of rum, not flour.
Then Andrew noticed the third clue. Across the horse's back, just behind the three "flour" barrels, was a long bundle wrapped in brown canvas and tied down with extra ropes. Andrew touched it gently. It was hard. Long and hard, with bumps every few inches—like the bumps you'd feel if six rifles were lined up side by side under a sheet.
And THEN Andrew noticed the fourth clue, and it was the biggest of all.
One of Mr. Croghan's drivers—a man named Silas—was standing about ten feet away, watching Andrew very, very carefully. Silas's left hand was inside his coat. His eyes never left Andrew's face. And as Andrew bent down to look at the leaking barrel, Silas slowly began walking his own horse off the road and into the trees.
Andrew straightened up. He looked at Silas. Silas looked back. For one long second, the two of them just stared at each other.
Then Andrew yelled at the top of his lungs.
"MR. SMITH! HORSE NUMBER FOUR! THE BARRELS ARE LYING!"
Every head in the pack train whipped around.